Union Membership, Coverage, Density and Employment by Industry: 2021
CIC	Industry	Obs	Employment (in 1000s)	Members (in 1000s)	Covered (in 1000s)	% Mem	% Cov
	AGRICULTURE, FORESTRY, FISHING, & HUNTING	1,496	1,349	47	52	3.5%	3.9%
170	Crop production	755	757	33	35	4.4%	4.6%
180	Animal production	471	354	5	5	1.5%	1.5%
190	Forestry except logging	57	38	5	7	14.2%	19.6%
270	Logging	74	64	1	1	1.4%	1.4%
280	Fishing, hunting, and trapping	31	22	0	0	0.7%	0.7%
290	Support activities for agriculture and forestry	108	112	2	4	1.7%	3.3%
	MINING	837	564	34	35	6.0%	6.3%
370	Oil and gas extraction	74	57	6	6	10.2%	10.2%
380	Coal mining	115	47	4	5	9.1%	10.6%
390	Metal ore mining	49	32	2	2	5.7%	5.7%
470	Nonmetallic mineral mining and quarrying	110	84	9	9	10.3%	11.1%
490	Support activities for mining	489	343	13	13	3.8%	3.9%
	UTILITIES	9,623	9,902	1,440	1,554	14.5%	15.7%
570	Electric power generation, transmission and distribution	767	725	149	155	20.5%	21.3%
580	Natural gas distribution	129	114	29	29	25.6%	25.6%
590	Electric and gas, and other combinations	89	100	20	24	19.9%	24.3%
670	Water, steam, air conditioning, and irrigation systems	259	259	62	69	24.0%	26.7%
680	Sewage treatment facilities	120	115	30	32	26.4%	28.0%
690	Not specified utilities	27	31	5	5	17.8%	17.8%
770	CONSTRUCTION	8,232	8,559	1,145	1,239	13.4%	14.5%
	NONDURABLE GOODS MANUFACTURING	5,049	5,165	416	455	8.1%	8.8%
1070	Animal food, grain, and oilseed milling	183	176	17	23	9.6%	12.9%
1080	Sugar and confectionery products	83	76	10	11	13.7%	14.4%
1090	Fruit and vegetable preserving and specialty food manufacturing	153	135	22	22	16.5%	16.5%
1170	Dairy product manufacturing	148	135	17	17	12.8%	12.8%
1180	Animal slaughtering and processing	547	473	68	78	14.4%	16.5%
1190	Retail bakeries	181	183	13	13	7.3%	7.3%
1270	Bakeries and tortilla manufacturing, except retail	163	184	10	10	5.4%	5.7%
1280	Seafood and other miscellaneous foods, n.e.c.	192	202	14	14	6.8%	6.8%
1290	Not specified food industries	68	69	2	4	3.5%	5.9%
1370	Beverage manufacturing	264	295	26	27	8.7%	9.1%
1390	Tobacco manufacturing	11	16	0	0	2.8%	2.8%
1470	Fiber, yarn, and thread mills	10	11	0	0	0.0%	0.0%
1480	Fabric mills, except knitting mills	67	55	2	2	3.6%	3.6%
1490	Textile and fabric finishing and coating mills	10	9	0	0	0.0%	0.0%
1570	Carpet and rug mills	46	47	0	0	0.0%	0.0%
1590	Textile product mills, except carpet and rug	56	52	0	0	0.5%	0.5%
1670	Knitting mills, and apparel knitting mills	12	11	0	0	0.0%	0.0%
1691	Cut and sew, and apparel accessories and other apparel manufacturing	146	161	10	11	6.4%	7.1%
1770	Footwear manufacturing	30	30	1	1	4.1%	4.1%
1790	Leather tanning and finishing and other leather and allied products manufacturi	13	15	0	0	2.4%	2.4%
1870	Pulp, paper, and paperboard mills	194	191	48	50	25.1%	26.1%
1880	Paperboard containers and boxes	96	98	12	14	11.9%	14.6%
1890	Miscellaneous paper and pulp products	67	75	10	11	13.4%	15.2%
1990	Printing and related support activities	324	354	22	26	6.3%	7.2%
2070	Petroleum refining	181	176	23	25	13.1%	13.9%
2090	Miscellaneous petroleum and coal products	13	12	1	1	8.1%	8.1%
2170	Resin, synthetic rubber and fibers, and filaments manufacturing	129	136	4	4	3.3%	3.3%
2180	Agricultural chemical manufacturing	34	28	2	2	8.5%	8.5%
2190	Pharmaceutical and medicine manufacturing	580	654	18	20	2.7%	3.0%
2270	Paint, coating, and adhesives manufacturing	47	54	0	0	0.0%	0.0%
2280	Soap, cleaning compound, and cosmetic manufacturing	113	125	3	3	2.3%	2.5%
2290	Industrial and miscellaneous chemicals	392	406	26	26	6.4%	6.5%
2370	Plastics product manufacturing	390	411	19	24	4.7%	5.8%
2380	Tire manufacturing	52	56	8	8	15.0%	15.0%
2390	Rubber product, except tire, manufacturing	54	55	5	5	9.6%	9.6%
	DURABLE GOODS MANUFACTURING	8,763	9,082	689	776	7.6%	8.5%
2470	Pottery, ceramics, and plumbing fixture manufacturing	26	24	1	1	2.7%	2.7%
2480	Structural clay product manufacturing	25	21	2	2	8.5%	8.5%
2490	Glass and glass product manufacturing	103	117	7	8	5.8%	6.6%
2570	Cement, concrete, lime, and gypsum product manufacturing	154	148	9	9	5.8%	6.1%
2590	Miscellaneous nonmetallic mineral product manufacturing	80	81	5	5	6.5%	6.5%
2670	Iron and steel mills and steel product manufacturing	226	237	57	59	24.2%	24.9%
2680	Aluminum production and processing	77	75	13	15	17.9%	20.1%
2690	Nonferrous metal (except aluminum) production and processing	31	29	4	4	13.1%	13.1%
2770	Foundries	56	51	15	15	29.5%	29.5%
2780	Metal forgings and stampings	30	31	4	4	11.7%	11.7%
2790	Cutlery and hand tool manufacturing	41	46	4	4	9.6%	9.6%
2870	Structural metals, and boiler, tank, and shipping container manufacturing	337	351	28	28	7.9%	8.0%
2880	Machine shops; turned product; screw, nut, and bolt manufacturing	268	280	7	9	2.4%	3.3%
2890	Coating, engraving, heat treating and allied activities	57	63	0	1	0.0%	2.2%
2970	Ordnance	58	52	7	7	13.1%	13.1%
2980	Miscellaneous fabricated metal products manufacturing	269	276	10	11	3.7%	4.1%
2990	Not specified metal industries	19	22	2	3	9.4%	15.2%
3070	Agricultural implement manufacturing	151	116	15	16	12.5%	13.6%
3080	Construction, and mining and oil and gas field machinery manufacturing	177	148	7	8	4.5%	5.7%
3095	Commercial and service industry machinery manufacturing	71	80	4	4	4.8%	4.8%
3170	Metalworking machinery manufacturing	94	105	11	15	10.4%	13.9%
3180	Engines, turbines, and power transmission equipment manufacturing	46	49	8	8	16.4%	16.4%
3291	Machinery manufacturing, n.e.c. or not specified	649	665	38	45	5.8%	6.8%
3365	Computer and peripheral equipment manufacturing	123	130	1	2	0.9%	1.8%
3370	Communications, and audio and video equipment manufacturing	83	97	0	1	0.0%	1.3%
3380	Navigational, measuring, electromedical, and control instruments manufacturing	173	177	3	3	1.5%	1.5%
3390	Electronic component and product manufacturing, n.e.c.	585	604	4	8	0.7%	1.3%
3470	Household appliance manufacturing	67	75	7	9	9.8%	11.7%
3490	Electrical lighting and electrical equipment manufacturing, and other electrica	308	329	23	28	6.9%	8.4%
3570	Motor vehicles and motor vehicle equipment manufacturing	1,168	1,334	157	168	11.8%	12.6%
3580	Aircraft and parts manufacturing	737	758	95	105	12.5%	13.9%
3590	Aerospace product and parts manufacturing	84	80	9	9	11.6%	11.6%
3670	Railroad rolling stock manufacturing	26	29	4	7	15.4%	23.0%
3680	Ship and boat building	224	202	27	33	13.2%	16.2%
3690	Other transportation equipment manufacturing	32	36	5	5	13.6%	13.6%
3770	Sawmills and wood preservation	128	98	3	3	3.4%	3.4%
3780	Veneer, plywood, and engineered wood products	30	26	3	3	11.2%	11.2%
3790	Prefabricated wood buildings and mobile homes	24	27	2	3	5.8%	10.4%
3875	Miscellaneous wood products	224	220	14	16	6.3%	7.1%
3895	Furniture and related product manufacturing	357	356	13	16	3.8%	4.6%
3960	Medical equipment and supplies manufacturing	598	620	11	14	1.8%	2.2%
3970	Sporting and athletic goods, and doll, toy and game manufacturing	74	70	0	1	0.0%	2.1%
3980	Miscellaneous manufacturing, n.e.c.	393	417	21	29	5.1%	6.9%
3990	Not specified manufacturing industries	280	330	29	33	8.8%	9.9%
	WHOLESALE TRADE	3,089	3,127	119	142	3.8%	4.5%
4070	Motor vehicles, parts and supplies, merchant wholesalers	136	153	0	1	0.0%	0.5%
4080	Furniture and home furnishing, merchant wholesalers	47	51	3	3	5.3%	5.3%
4090	Lumber and other construction materials, merchant wholesalers	164	154	6	6	4.0%	4.0%
4170	Professional and commercial equipment and supplies, merchant wholesalers	251	253	6	6	2.3%	2.5%
4180	Metals and minerals, except petroleum, merchant wholesalers	38	38	0	0	0.0%	0.0%
4195	Electrical and electronic goods, merchant wholesalers	160	162	2	4	0.9%	2.3%
4265	Hardware, plumbing and heating equipment, and supplies, merchant wholesalers	163	165	2	2	1.2%	1.2%
4270	Machinery, equipment, and supplies, merchant wholesalers	354	325	9	15	2.8%	4.7%
4280	Recyclable material, merchant wholesalers	65	57	2	2	3.4%	3.4%
4290	Miscellaneous durable goods, merchant wholesalers	51	42	0	0	0.0%	0.0%
4370	Paper and paper products, merchant wholesalers	34	36	0	0	0.0%	0.0%
4380	Drugs, sundries, and chemical and allied products, merchant wholesalers	203	218	5	5	2.2%	2.3%
4390	Apparel, piece goods, and notions, merchant wholesalers	52	55	1	1	1.7%	1.7%
4470	Groceries and related products, merchant wholesalers	771	824	65	74	7.9%	9.0%
4480	Farm product raw materials, merchant wholesalers	89	55	1	1	1.4%	1.4%
4490	Petroleum and petroleum products, merchant wholesalers	111	98	3	3	2.8%	3.0%
4560	Alcoholic beverages, merchant wholesalers	125	126	11	11	8.4%	8.8%
4570	Farm supplies, merchant wholesalers	39	43	0	0	0.0%	0.0%
4580	Miscellaneous nondurable goods, merchant wholesalers	162	184	4	7	2.4%	4.1%
4585	Wholesale electronics markets, agents and brokers	32	38	0	1	0.0%	3.5%
4590	Not specified wholesale trade	42	49	0	0	0.0%	0.0%
	RETAIL TRADE	14,760	15,044	664	752	4.4%	5.0%
4670	Automobile dealers	1,105	1,112	15	24	1.4%	2.1%
4680	Other motor vehicle dealers	181	155	2	3	1.3%	1.9%
4690	Auto parts, accessories, and tire stores	482	445	4	8	0.9%	1.9%
4770	Furniture and home furnishings stores	420	442	1	6	0.3%	1.3%
4780	Household appliance stores	45	51	1	1	2.6%	2.6%
4795	Electronics stores	364	396	15	17	3.8%	4.2%
4870	Building material and supplies dealers	1,063	1,032	11	17	1.1%	1.7%
4880	Hardware stores	224	191	2	3	0.8%	1.7%
4890	Lawn and garden equipment and supplies stores	295	232	2	4	1.1%	1.8%
4971	Supermarkets and other grocery (except convenience) stores	2,332	2,483	440	458	17.7%	18.4%
4972	Convenience Stores	317	283	5	6	1.9%	2.1%
4980	Specialty food stores	175	184	3	4	1.9%	2.0%
4990	Beer, wine, and liquor stores	124	131	0	2	0.0%	1.4%
5070	Pharmacies and drug stores	840	853	35	39	4.1%	4.6%
5080	Health and personal care, except drug, stores	349	375	3	4	0.9%	1.1%
5090	Gasoline stations	480	445	9	11	2.1%	2.6%
5170	Clothing stores	732	801	4	10	0.5%	1.3%
5180	Shoe stores	118	122	1	1	0.5%	0.5%
5190	Jewelry, luggage, and leather goods stores	103	101	0	0	0.0%	0.0%
5275	Sporting goods, camera, and hobby and toy stores	427	411	1	6	0.3%	1.6%
5280	Sewing, needlework and piece goods stores	50	47	0	0	0.0%	0.0%
5295	Musical instrument and supplies stores	39	41	0	0	0.0%	0.0%
5370	Book stores and news dealers	75	75	5	5	6.8%	6.8%
5381	Department stores	253	268	6	7	2.1%	2.7%
5391	General merchandise stores, including warehouse clubs and supercenters	2,110	2,123	59	68	2.8%	3.2%
5470	Florists	66	69	0	0	0.0%	0.0%
5480	Office supplies and stationery stores	82	77	1	1	1.0%	1.0%
5490	Used merchandise stores	178	164	2	2	1.4%	1.4%
5570	Gift, novelty, and souvenir shops	88	77	1	1	1.3%	1.3%
5580	Miscellaneous retail stores	464	495	5	5	1.0%	1.0%
5593	Electronic shopping and mail-order houses	661	805	8	11	1.0%	1.3%
5670	Vending machine operators	31	32	2	5	7.6%	16.9%
5680	Fuel dealers	95	67	1	1	1.4%	1.4%
5690	Other direct selling establishments	48	52	1	1	2.6%	2.6%
5790	Not specified retail trade	344	406	16	20	4.0%	5.0%
	TRANSPORTATION & WAREHOUSING	6,521	7,053	1,437	1,559	20.4%	22.1%
6070	Air transportation	562	603	231	242	38.4%	40.2%
6080	Rail transportation	248	199	108	113	54.0%	56.8%
6090	Water transportation	64	64	13	14	20.2%	21.5%
6170	Truck transportation	1,653	1,709	120	134	7.0%	7.8%
6180	Bus service and urban transit	396	447	190	194	42.5%	43.5%
6190	Taxi and limousine service	200	245	15	15	6.1%	6.2%
6270	Pipeline transportation	66	53	3	3	4.9%	4.9%
6280	Scenic and sightseeing transportation	28	17	0	0	1.8%	1.8%
6290	Services incidental to transportation	668	721	123	131	17.1%	18.1%
6370	Postal Service	645	629	370	403	58.8%	64.1%
6380	Couriers and messengers	1,177	1,346	214	236	15.9%	17.5%
6390	Warehousing and storage	814	1,020	50	74	4.9%	7.2%
	INFORMATION	2,306	2,431	257	286	10.6%	11.8%
6470	Newspaper publishers	123	106	11	15	10.7%	13.8%
6480	Periodical, book, and directory publishers	140	134	5	7	3.9%	5.1%
6490	Software publishers	61	74	2	2	2.1%	2.1%
6570	Motion pictures and video industries	276	329	57	62	17.5%	18.7%
6590	Sound recording industries	22	27	4	4	15.1%	15.1%
6670	Broadcasting (except internet)	363	371	34	40	9.1%	10.8%
6672	Internet publishing and broadcasting and web search portals	164	197	1	3	0.6%	1.4%
6680	Wired telecommunications carriers	466	487	74	77	15.2%	15.7%
6690	Telecommunications, except wired telecommunications carriers	342	359	28	34	7.8%	9.6%
6695	Data processing, hosting, and related services	100	109	6	7	5.5%	6.7%
6770	Libraries and archives	214	204	31	32	15.2%	15.7%
6780	Other information services, except libraries and archives, and internet publish	35	36	4	4	11.5%	11.5%
	FINANCE & INSURANCE	6,714	7,012	109	159	1.6%	2.3%
6870	Banking and related activities	1,926	1,919	33	42	1.7%	2.2%
6880	Savings institutions, including credit unions	303	269	0	2	0.1%	0.8%
6890	Non-depository credit and related activities	982	1,098	10	15	0.9%	1.4%
6970	Securities, commodities, funds, trusts, and other financial investments	1,056	1,170	20	31	1.7%	2.7%
6991	Insurance carriers	1,590	1,681	30	49	1.8%	2.9%
6992	Agencies, brokerages, and other insurance related activities	857	875	16	20	1.8%	2.3%
	REAL ESTATE & RENTAL & LEASING	2,218	2,282	130	162	5.7%	7.1%
7071	Lessors of real estate, and offices of real estate agents and brokers	1,486	1,566	95	120	6.1%	7.7%
7072	Real estate property managers, offices of real estate appraisers, and other act	431	429	22	26	5.0%	6.1%
7080	Automotive equipment rental and leasing	119	115	8	8	6.6%	7.1%
7181	Other consumer goods rental	56	55	0	2	0.0%	2.9%
7190	Commercial, industrial, and other intangible assets rental and leasing	126	117	6	6	5.4%	5.4%
	PROF., SCIENTIFIC, TECHNICAL SERVICES	10,134	10,748	166	251	1.5%	2.3%
7270	Legal services	1,271	1,255	24	27	1.9%	2.1%
7280	Accounting, tax preparation, bookkeeping and payroll services	843	900	4	12	0.4%	1.4%
7290	Architectural, engineering, and related services	1,476	1,521	35	54	2.3%	3.5%
7370	Specialized design services	169	192	0	0	0.0%	0.2%
7380	Computer systems design and related services	3,304	3,733	53	84	1.4%	2.3%
7390	Management, scientific and technical consulting services	1,142	1,179	11	14	0.9%	1.2%
7460	Scientific research and development services	730	697	20	28	2.8%	4.0%
7470	Advertising and related services	420	485	7	7	1.5%	1.5%
7480	Veterinary services	357	362	5	13	1.3%	3.6%
7490	Other professional, scientific and technical services	422	425	7	11	1.7%	2.6%
	MANAGEMENT & RELATED SERVICES	4,623	5,055	253	296	5.0%	5.9%
7570	Management of companies and enterprises	56	60	3	6	5.2%	10.4%
7580	Employment services	720	816	22	28	2.7%	3.4%
7590	Business support services	441	462	6	11	1.2%	2.4%
7670	Travel arrangements and reservation services	187	191	3	4	1.6%	2.2%
7680	Investigation and security services	656	724	52	61	7.2%	8.4%
7690	Services to buildings and dwellings (except cleaning during construction and im	1,108	1,241	75	85	6.1%	6.9%
7770	Landscaping services	789	882	37	42	4.2%	4.8%
7780	Other administrative and other support services	257	277	13	13	4.6%	4.9%
7790	Waste management and remediation services	409	403	42	46	10.5%	11.3%
	EDUCATIONAL SERVICES	13,496	13,231	4,007	4,518	30.3%	34.1%
7860	Elementary and secondary schools	9,079	8,853	3,457	3,863	39.1%	43.6%
7870	Colleges and universities, including junior colleges	3,743	3,688	510	605	13.8%	16.4%
7880	Business, technical, and trade schools and training	47	41	6	7	14.0%	17.9%
7890	Other schools and instruction, and educational support services	627	650	35	42	5.3%	6.5%
	HEALTH CARE & SOCIAL ASSISTANCE	19,858	19,736	1,598	1,842	8.1%	9.3%
7970	Offices of physicians	1,371	1,420	51	62	3.6%	4.4%
7980	Offices of dentists	845	854	29	36	3.4%	4.2%
7990	Office of chiropractors	117	114	1	1	1.3%	1.3%
8070	Offices of optometrists	147	137	1	2	0.8%	1.6%
8080	Offices of other health practitioners	169	160	3	3	1.8%	1.8%
8090	Outpatient care centers	1,978	1,918	88	107	4.6%	5.6%
8170	Home health care services	1,242	1,308	77	90	5.9%	6.9%
8180	Other health care services	1,473	1,568	95	110	6.0%	7.0%
8191	General medical and surgical hospitals, and specialty (except psychiatric and s	7,427	7,286	951	1,080	13.0%	14.8%
8192	Psychiatric and substance abuse hospitals	99	88	17	21	18.7%	24.2%
8270	Nursing care facilities (skilled nursing facilities)	1,374	1,311	71	84	5.4%	6.4%
8290	Residential care facilities, except skilled nursing facilities	925	914	29	37	3.2%	4.0%
8370	Individual and family services	1,467	1,442	144	157	10.0%	10.9%
8380	Community food and housing, and emergency services	169	174	6	7	3.7%	3.9%
8390	Vocational rehabilitation services	82	79	2	2	3.1%	3.1%
8470	Child day care services	973	963	33	40	3.5%	4.2%
	ARTS, ENTERTAINMENT, & RECREATION	2,219	2,295	146	166	6.4%	7.2%
8561	Performing arts companies	99	111	8	10	7.6%	8.7%
8562	Spectator sports	94	115	8	13	7.1%	11.5%
8563	Promoters of performing arts, sports, and similar events, agents and managers f	72	81	11	12	13.9%	15.4%
8564	Independent artists, writers, and performers	45	46	4	4	8.9%	8.9%
8570	Museums, art galleries, historical sites, and similar institutions	350	339	44	50	13.1%	14.8%
8580	Bowling centers	38	43	0	0	0.0%	0.0%
8590	Other amusement, gambling, and recreation industries	1,521	1,560	70	76	4.5%	4.9%
	ACCOMODATION & FOOD SERVICES	8,754	9,292	164	201	1.8%	2.2%
8660	Traveler accommodation	1,024	921	57	63	6.2%	6.8%
8670	Recreational vehicle parks and camps, and rooming and boarding houses, dormitor	78	63	1	1	2.1%	2.1%
8680	Restaurants and other food services	7,489	8,162	106	137	1.3%	1.7%
8690	Drinking places, alcoholic beverages	163	146	0	0	0.0%	0.3%
	OTHER SERVICES, EXC. PUBLIC ADMIN.	5,597	5,670	183	216	3.2%	3.8%
8770	Automotive repair and maintenance	986	1,037	22	29	2.1%	2.8%
8780	Car washes	137	157	2	2	1.4%	1.4%
8790	Electronic and precision equipment repair and maintenance	74	78	2	2	2.7%	2.7%
8870	Commercial and industrial machinery and equipment repair and maintenance	256	240	13	15	5.5%	6.4%
8891	Personal and household goods repair and maintenance	95	103	1	4	1.3%	3.5%
8970	Barber shops	65	83	2	2	2.6%	2.6%
8980	Beauty salons	476	500	6	7	1.1%	1.4%
8990	Nail salons and other personal care services	292	328	3	4	0.8%	1.2%
9070	Dry cleaning and laundry services	193	210	14	15	6.7%	7.2%
9080	Funeral homes, and cemeteries and crematories	106	105	11	12	10.3%	11.2%
9090	Other personal services	262	288	11	17	3.8%	5.7%
9160	Religious organizations	986	949	6	9	0.6%	1.0%
9170	Civic, social, advocacy organizations, and grantmaking and giving services	813	706	15	20	2.1%	2.8%
9180	Labor unions	77	80	52	54	65.0%	67.0%
9190	Business, professional, political, and similar organizations	194	162	5	7	3.2%	4.1%
9290	Private households	585	645	17	18	2.7%	2.8%
	PUBLIC ADMINISTRATION	8,120	7,382	2,143	2,373	29.0%	32.1%
9370	Executive offices and legislative bodies	1,205	1,076	223	254	20.7%	23.6%
9380	Public finance activities	359	331	90	109	27.2%	33.0%
9390	Other general government and support	161	149	35	45	23.4%	29.9%
9470	Justice, public order, and safety activities	2,731	2,672	1,093	1,154	40.9%	43.2%
9480	Administration of human resource programs	1,356	1,267	332	374	26.2%	29.5%
9490	Administration of environmental quality and housing programs	396	306	77	88	25.2%	28.8%
9570	Administration of economic programs and space research	727	556	139	156	25.0%	28.1%
9590	National security and international affairs	1,185	1,025	154	193	15.0%	18.8%
Copyright 2024 by Barry T. Hirsch, David A. Macpherson, and William E. Even.  The use of this data requires citation.