Union Membership, Coverage, Density and Employment by Industry, 1990 (details in table note)
CIC	Industry Name	Obs	Employment	Members	Covered	%Mem	%Cov
	AGRICULTURE	2,121	1,173,927	19,890	22,576	1.7	1.9
10	Agricultural production, crops	921	515,309	9,667	9,667	1.9	1.9
11	Agricultural production, livestock	826	428,351	6,710	8,252	1.6	1.9
20	Agricultural services, exc. horticultural	374	230,268	3,514	4,658	1.5	2.0
	FORESTRY AND FISHERIES	820	457,979	15,639	21,145	3.4	4.6
21	Horticultural services	578	355,663	9,100	10,288	2.6	2.9
30	Forestry	176	68,401	5,618	9,613	8.2	14.1
31	Fishing, hunting, and trapping	66	33,915	920	1,244	2.7	3.7
	MINING	1,397	676,466	121,469	136,259	18.0	20.1
40	Metal mining	187	64,430	16,716	20,757	25.9	32.2
41	Coal mining	316	159,862	60,653	64,383	37.9	40.3
42	Crude petroleum and natural gas extraction	660	339,630	17,088	19,269	5.0	5.7
50	Nonmetallic mining and quarrying, exc. fuel	234	112,544	27,012	31,851	24.0	28.3
60	CONSTRUCTION	9,874	5,666,481	1,272,895	1,355,009	22.5	23.9
	MANUFACTURING, NONDURABLE GOODS	14,658	8,276,305	1,536,029	1,657,379	18.6	20.0
100	Meat products	810	444,074	87,332	94,553	19.7	21.3
101	Dairy products	313	172,840	51,286	53,083	29.7	30.7
102	Canned and preserved fruits and vegetables	476	243,993	77,359	80,031	31.7	32.8
110	Grain mill products	255	142,413	34,718	36,955	24.4	25.9
111	Bakery products	382	226,729	77,940	83,006	34.4	36.6
112	Sugar and confectionery products	198	105,089	38,545	39,401	36.7	37.5
120	Beverage industries	360	233,478	57,560	60,797	24.7	26.0
121	Miscellaneous food preparations and kindred products	365	201,615	38,412	42,919	19.1	21.3
122	Not specified food industries	4	2,678	0	798	0.0	29.8
130	Tobacco manufacturers	87	42,601	7,870	8,388	18.5	19.7
132	Knitting mills	238	107,624	8,392	10,037	7.8	9.3
140	Dyeing and finishing textiles, exc. wool and knit goods	58	28,462	3,516	3,516	12.4	12.4
141	Floor coverings, exc. hard surface	89	69,998	8,251	8,251	11.8	11.8
142	Yarn, thread, and fabric mills	848	424,059	35,649	39,423	8.4	9.3
150	Miscellaneous textile mill products	91	40,735	6,364	7,647	15.6	18.8
151	Apparel and accessories, exc. knit	1,508	884,162	142,917	156,990	16.2	17.8
152	Miscellaneous fabricated textile products	250	134,427	14,544	14,642	10.8	10.9
160	Pulp, paper, and paperboard mills	581	330,752	176,074	179,733	53.2	54.3
161	Miscellaneous paper and pulp products	341	201,369	42,302	46,126	21.0	22.9
162	Paperboard containers and boxes	334	199,232	56,405	57,774	28.3	29.0
171	Newspaper publishing and printing	927	518,144	67,549	75,206	13.0	14.5
172	Printing, publishing, allied industries, exc. newspapers	2,072	1,214,030	124,837	137,317	10.3	11.3
180	Plastics, synthetics, and resins	291	161,214	23,849	25,713	14.8	15.9
181	Drugs	505	265,843	22,655	27,441	8.5	10.3
182	Soaps and cosmetics	263	152,431	24,443	24,443	16.0	16.0
190	Paints, varnishes, and related products	111	67,608	8,600	9,520	12.7	14.1
191	Agricultural chemicals	89	41,783	5,185	5,185	12.4	12.4
192	Industrial and miscellaneous chemicals	1,076	609,955	117,268	127,823	19.2	21.0
200	Petroleum refining	227	135,600	36,360	41,163	26.8	30.4
201	Miscellaneous petroleum and coal products	46	29,668	7,864	10,084	26.5	34.0
210	Tires and inner tubes	141	83,897	29,294	30,240	34.9	36.0
211	Other rubber products, plastics footwear and belting	236	127,460	31,145	32,638	24.4	25.6
212	Miscellaneous plastics products	839	497,639	56,066	64,360	11.3	12.9
220	Leather tanning and finishing	19	9,689	3,813	4,358	39.4	45.0
221	Footwear, exc. rubber and plastic	154	86,189	7,587	13,384	8.8	15.5
222	Leather products, exc. footwear	74	38,825	4,077	4,435	10.5	11.4
	MANUFACTURING, DURABLE GOODS	20,621	12,179,632	2,688,615	2,894,289	22.1	23.8
230	Logging	196	106,748	6,720	9,743	6.3	9.1
231	Sawmills, planing mills, and millwork	696	389,874	63,538	67,530	16.3	17.3
232	Wood buildings and mobile homes	104	63,135	3,156	3,156	5.0	5.0
241	Miscellaneous wood products	246	130,266	16,250	18,467	12.5	14.2
242	Furniture and fixtures	1,137	643,142	80,364	85,356	12.5	13.3
250	Glass and glass products	330	190,262	70,576	71,393	37.1	37.5
251	Cement, concrete, gypsum, and plaster products	337	198,572	42,483	44,646	21.4	22.5
252	Structural clay products	71	44,835	11,441	14,711	25.5	32.8
261	Pottery and related products	73	38,001	13,113	13,113	34.5	34.5
262	Miscellaneous nonmetallic mineral and stone products	244	141,870	35,123	41,628	24.8	29.3
270	Blast furnaces, steelworks, rolling and finishing mills	590	389,970	204,016	206,309	52.3	52.9
271	Iron and steel foundries	202	129,887	50,536	51,956	38.9	40.0
272	Primary aluminum industries	210	128,159	47,541	50,047	37.1	39.1
280	Other primary metal industries	372	207,742	52,426	56,597	25.2	27.2
281	Cutlery, handtools, and other hardware	201	115,856	23,402	24,543	20.2	21.2
282	Fabricated structural metal products	784	469,402	106,919	112,822	22.8	24.0
290	Screw machine products	95	57,617	8,168	8,721	14.2	15.1
291	Metal forgings and stampings	226	127,953	35,693	37,797	27.9	29.5
292	Ordnance	151	82,571	22,648	26,109	27.4	31.6
300	Miscellaneous fabricated metal products	578	360,038	92,922	101,271	25.8	28.1
301	Not specified metal industries	1	761	0	761	0.0	100.0
310	Engines and turbines	127	83,137	38,453	38,453	46.3	46.3
311	Farm machinery and equipment	211	107,258	31,581	34,102	29.4	31.8
312	Construction and material handling machines	381	231,746	55,767	60,126	24.1	25.9
320	Metalworking machinery	472	257,993	35,170	38,975	13.6	15.1
321	Office and accounting machines	141	78,747	6,458	7,265	8.2	9.2
322	Electronic computing equipment	1,164	660,359	13,644	18,183	2.1	2.8
331	Machinery, exc. electrical, n.e.c.	1,629	964,599	165,160	177,448	17.1	18.4
332	Not specified machinery	7	4,098	574	574	14.0	14.0
340	Household appliances	253	155,138	60,022	64,387	38.7	41.5
341	Radio, T.V., and communication equipment	721	433,405	49,630	55,795	11.5	12.9
342	Electrical machinery, equipment, and supplies, n.e.c.	2,434	1,439,888	200,539	222,791	13.9	15.5
350	Not specified electrical machinery, equipment, and supplie	14	10,149	2,619	2,619	25.8	25.8
351	Motor vehicles and motor vehicle equipment	1,907	1,119,834	542,297	558,555	48.4	49.9
352	Aircraft and parts	969	659,212	211,384	239,452	32.1	36.3
360	Ship and boat building and repairing	426	239,774	61,647	70,727	25.7	29.5
361	Railroad locomotives and equipment	44	28,128	13,261	13,261	47.1	47.1
362	Guided missiles, space vehicles, and parts	639	424,798	81,676	99,605	19.2	23.4
370	Cycles and miscellaneous transportation equipment	112	71,963	19,196	20,299	26.7	28.2
371	Scientific and controlling instruments	424	249,334	24,810	30,100	10.0	12.1
372	Optical and health services supplies	530	312,728	20,328	22,580	6.5	7.2
380	Photographic equipment and supplies	232	127,984	11,082	12,796	8.7	10.0
381	Watches, clocks, and clockwork operated devices	23	11,925	1,380	1,380	11.6	11.6
382	Not specified professional equipment	0
390	Toys, amusement, and sporting goods	198	115,663	17,229	17,828	14.9	15.4
391	Miscellaneous manufacturing industries	663	341,141	33,786	35,832	9.9	10.5
392	Not specified manufacturing industries	56	33,969	3,887	4,481	11.4	13.2
	TRANSPORTATION	8,139	4,631,513	1,838,999	1,971,267	39.7	42.6
400	Railroads	585	298,684	229,520	234,493	76.8	78.5
401	Bus service and urban transit	757	431,574	167,205	182,282	38.7	42.2
402	Taxicab service	126	67,445	4,594	5,214	6.8	7.7
410	Trucking service	2,820	1,617,163	392,408	421,300	24.3	26.1
411	Warehousing and storage	245	138,651	19,338	19,796	13.9	14.3
412	U.S. Postal Service	1,543	867,214	667,997	724,302	77.0	83.5
420	Water transportation	266	162,495	49,143	53,716	30.2	33.1
421	Air transportation	1,204	717,327	273,826	291,938	38.2	40.7
422	Pipe lines, exc. natural gas	30	15,915	3,146	3,828	19.8	24.1
432	Services incidental to transportation	563	315,045	31,821	34,397	10.1	10.9
	COMMUNICATIONS	2,646	1,504,879	532,767	592,668	35.4	39.4
440	Radio and television broadcasting	458	245,143	30,312	34,054	12.4	13.9
441	Telephone (wire and radio)	1,828	1,051,851	481,051	536,450	45.7	51.0
442	Telegraph and miscellaneous communications services	360	207,885	21,403	22,164	10.3	10.7
	UTILITIES AND SANITARY SERVICES	2,853	1,559,627	532,877	591,369	34.2	37.9
460	Electric light and power	1,325	707,061	263,019	287,239	37.2	40.6
461	Gas and steam supply systems	367	199,368	61,017	70,127	30.6	35.2
462	Electric and gas, and other combinations	278	160,948	63,339	69,825	39.4	43.4
470	Water supply and irrigation	380	213,731	52,343	61,941	24.5	29.0
471	Sanitary services	491	272,220	90,779	99,856	33.3	36.7
472	Not specified utilities	12	6,300	2,380	2,380	37.8	37.8
	WHOLESALE TRADE	6,989	4,001,332	262,060	296,671	6.5	7.4
500	Motor vehicles and equipment	311	187,545	10,638	11,141	5.7	5.9
501	Furniture and home furnishings	95	56,551	1,462	2,058	2.6	3.6
502	Lumber and construction materials	232	144,822	12,765	13,786	8.8	9.5
510	Sporting goods, toys, and hobby goods	68	39,574	906	1,349	2.3	3.4
511	Metals and minerals, exc. petroleum	148	89,737	10,299	11,090	11.5	12.4
512	Electrical goods	453	270,850	7,910	10,273	2.9	3.8
521	Hardware, plumbing and heating supplies	365	203,770	7,814	8,565	3.8	4.2
522	Not specified electrical and hardware products	0
530	Machinery, equipment, and supplies	1,738	978,752	20,480	26,226	2.1	2.7
531	Scrap and waste materials	215	128,627	13,584	14,600	10.6	11.4
532	Miscellaneous wholesale, durable goods	119	66,495	574	1,233	0.9	1.9
540	Paper and paper products	203	114,944	6,094	7,380	5.3	6.4
541	Drugs, chemicals, and allied products	345	204,416	11,560	12,177	5.7	6.0
542	Apparel, fabrics, and notions	194	105,188	6,419	8,324	6.1	7.9
550	Groceries and related products	1,208	714,461	107,485	119,056	15.0	16.7
551	Farm products - raw materials	183	77,780	1,723	3,079	2.2	4.0
552	Petroleum products	271	151,221	7,655	8,300	5.1	5.5
560	Alcoholic beverages	218	124,820	21,268	21,796	17.0	17.5
561	Farm supplies	227	113,839	1,556	2,441	1.4	2.1
562	Miscellaneous wholesale, nondurable goods	379	217,285	11,870	13,798	5.5	6.4
571	Not specified wholesale trade	17	10,655	0	0	0.0	0.0
579	RETAIL TRADE	30,873	17,370,236	1,086,676	1,212,512	6.3	7.0
580	Lumber and building material retailing	848	469,217	25,429	31,020	5.4	6.6
581	Hardware stores	316	172,099	1,937	2,631	1.1	1.5
582	Retail nurseries and garden stores	109	63,825	1,165	1,165	1.8	1.8
590	Mobile home dealers	34	18,895	82	82	0.4	0.4
591	Department stores	3,626	2,084,409	93,629	112,699	4.5	5.4
592	Variety stores	238	119,677	3,348	3,348	2.8	2.8
600	Miscellaneous general merchandise stores	233	116,398	11,171	13,634	9.6	11.7
601	Grocery stores	4,862	2,720,726	673,158	709,211	24.7	26.1
602	Dairy products stores	74	43,153	1,283	1,552	3.0	3.6
610	Retail bakeries	258	139,907	10,071	10,071	7.2	7.2
611	Food stores, n.e.c.	264	152,436	4,882	7,075	3.2	4.6
612	Motor vehicle dealers	1,797	1,023,276	47,462	55,867	4.6	5.5
620	Auto and home supply stores	657	363,302	7,589	8,395	2.1	2.3
621	Gasoline service stations	772	420,438	2,734	3,852	0.7	0.9
622	Miscellaneous vehicle dealers	152	83,986	0	0	0.0	0.0
630	Apparel and accessory stores, exc. shoe	1,358	743,619	18,887	25,074	2.5	3.4
631	Shoe stores	265	156,153	387	1,444	0.2	0.9
632	Furniture and home furnishings stores	722	410,544	13,142	14,574	3.2	3.5
640	Household appliances, TV, and radio stores	761	438,087	2,169	3,259	0.5	0.7
641	Eating and drinking places	9,249	5,259,897	88,433	111,291	1.7	2.1
642	Drug stores	945	523,343	34,795	40,782	6.6	7.8
650	Liquor stores	195	104,814	3,875	5,193	3.7	5.0
651	Sporting goods, bicycles, and hobby stores	463	254,233	6,656	6,711	2.6	2.6
652	Book and stationery stores	351	193,565	5,650	6,267	2.9	3.2
660	Jewelry stores	280	155,126	3,857	4,722	2.5	3.0
661	Sewing, needlework, and piece goods stores	95	49,806	0	0	0.0	0.0
662	Mail order houses	179	105,855	3,860	3,860	3.6	3.6
670	Vending machine operators	109	59,438	4,961	5,446	8.3	9.2
671	Direct selling establishments	165	100,707	0	1,196	0.0	1.2
672	Fuel and ice dealers	193	96,758	7,222	8,021	7.5	8.3
681	Retail florists	281	153,647	0	0	0.0	0.0
682	Miscellaneous retail stores	988	553,194	7,841	13,069	1.4	2.4
691	Not specified retail trade	34	19,703	1,001	1,001	5.1	5.1
	FINANCE, INSURANCE, AND REAL ESTATE	12,400	7,040,474	220,915	291,340	3.1	4.1
700	Banking	3,741	2,030,764	27,854	53,313	1.4	2.6
701	Savings and loan associations	306	180,635	1,284	2,935	0.7	1.6
702	Credit agencies, n.e.c.	892	505,431	12,719	18,124	2.5	3.6
710	Security, commodity brokerage, and investment companies	1,017	587,736	10,971	17,154	1.9	2.9
711	Insurance	3,793	2,180,630	74,713	97,149	3.4	4.5
712	Real estate, including real estate-insurance-law offices	2,651	1,555,279	93,374	102,666	6.0	6.6
	BUSINESS AND REPAIR SERVICES	9,435	5,482,286	243,079	298,683	4.4	5.4
721	Advertising	369	215,157	7,335	8,458	3.4	3.9
722	Services to dwellings and other buildings	854	480,468	57,494	61,133	12.0	12.7
730	Commercial research, development, and testing labs	487	259,373	14,023	17,371	5.4	6.7
731	Personnel supply services	1,112	651,155	15,965	22,725	2.5	3.5
732	Business management and consulting services	703	396,427	6,926	9,748	1.7	2.5
740	Computer and data processing services	1,133	677,543	7,025	14,304	1.0	2.1
741	Detective and protective services	565	332,238	26,973	34,421	8.1	10.4
742	Business services, n.e.c.	1,876	1,092,300	32,754	44,673	3.0	4.1
750	Automotive services, exc. repair	588	357,004	23,390	26,596	6.6	7.4
751	Automotive repair shops	1,105	641,189	15,849	20,671	2.5	3.2
752	Electrical repair shops	152	94,995	5,458	6,059	5.7	6.4
760	Miscellaneous repair services	491	284,438	29,886	32,525	10.5	11.4
	PERSONAL SERVICES	6,543	3,539,279	163,683	192,790	4.6	5.4
761	Private households	1,756	997,959	0	1,429	0.0	0.1
762	Hotels and motels	2,493	1,253,500	126,998	146,059	10.1	11.7
770	Lodging places, exc. hotels and motels	231	131,148	624	987	0.5	0.8
771	Laundry, cleaning, and garment services	746	407,446	28,656	31,895	7.0	7.8
772	Beauty shops	763	425,788	3,483	7,310	0.8	1.7
780	Barber shops	42	26,559	1,323	1,323	5.0	5.0
781	Funeral service and crematories	100	58,843	1,000	1,000	1.7	1.7
782	Shoe repair shops	2	865	0	0	0.0	0.0
790	Dressmaking shops	6	2,908	0	0	0.0	0.0
791	Miscellaneous personal services	404	234,264	1,600	2,785	0.7	1.2
	ENTERTAINMENT AND RECREATION SERVICES	2,275	1,235,350	140,811	159,187	11.4	12.9
800	Theaters and motion pictures	578	337,493	64,787	66,853	19.2	19.8
801	Bowling alleys, billiard and pool parlors	93	54,385	1,587	1,587	2.9	2.9
802	Miscellaneous entertainment and recreation services	1,604	843,472	74,438	90,746	8.8	10.8
831	HOSPITALS	8,548	4,709,388	678,972	836,864	14.4	17.8
	MEDICAL SERVICES, EXCEPT HOSPITALS	7,489	4,122,276	321,484	392,717	7.8	9.5
812	Offices of physicians	1,477	809,662	12,393	24,125	1.5	3.0
820	Offices of dentists	766	426,548	7,114	9,380	1.7	2.2
821	Offices of chiropractors	90	53,144	0	0	0.0	0.0
822	Offices of optometrists	79	42,229	0	132	0.0	0.3
830	Offices of health practitioners, n.e.c.	64	35,323	0	0	0.0	0.0
832	Nursing and personal care facilities	2,846	1,547,183	164,939	192,182	10.7	12.4
840	Health services, n.e.c.	2,167	1,208,187	137,039	166,897	11.3	13.8
	EDUCATIONAL SERVICES	16,861	9,050,206	3,079,360	3,709,073	34.0	41.0
842	Elementary and secondary schools	11,220	6,048,835	2,716,948	3,237,215	44.9	53.5
850	Colleges and universities	5,016	2,661,768	328,089	425,679	12.3	16.0
851	Business, trade, and vocational schools	114	61,992	4,213	5,654	6.8	9.1
852	Libraries	337	178,034	24,687	30,100	13.9	16.9
860	Educational services, n.e.c.	174	99,577	5,423	10,425	5.4	10.5
	SOCIAL SERVICES	3,617	1,965,531	171,795	209,576	8.7	10.7
861	Job training and vocational rehabilitation services	434	228,444	5,937	7,664	2.6	3.4
862	Child day care services	1,027	570,511	14,139	19,066	2.5	3.3
870	Residential care facilities, without nursing	676	367,825	36,242	42,193	9.9	11.5
871	Social services, n.e.c.	1,480	798,751	115,477	140,653	14.5	17.6
	OTHER PROFESSIONAL SERVICES	6,643	3,660,688	131,823	165,550	3.6	4.5
841	Legal services	1,629	896,703	17,637	23,148	2.0	2.6
872	Museums, art galleries, and zoos	204	97,204	6,388	7,961	6.6	8.2
880	Religious organizations	1,451	795,447	3,073	7,109	0.4	0.9
881	Membership organizations	983	518,570	71,910	77,754	13.9	15.0
882	Engineering, architectural, and surveying services	1,295	746,558	17,356	25,083	2.3	3.4
890	Accounting, auditing, and bookkeeping services	750	415,667	5,474	10,029	1.3	2.4
891	Noncommercial educational and scientific research	259