Occupations by federal employment

More federal employees work in miscellaneous administration and program than in any other occupational series: 111,646 of the 2,289,472 the Office of Personnel Management publishes.

American Factbook Research

Federal civilian employees by occupational series · March 1, 2025

Federal civilian employees by occupational series, March 1, 2025
Rank	Name	employees
1	Miscellaneous Administration and Program	111,646
2	Nurse	109,716
3	Information Technology Management	101,332
4	Management and Program Analysis	97,742
5	Compliance Inspection and Support	59,027
6	Miscellaneous Clerk and Assistant	45,351
7	Contracting	44,381
8	Criminal Investigation	43,968
9	General Attorney	43,533
10	General Inspection, Investigation, Enforcement, and Compliance Series	42,403
11	Human Resources Management	42,397
12	Medical Support Assistance	40,723
13	Medical Officer	37,766
14	Contact Representative	36,864
15	General Engineering	34,563
16	General Business and Industry	33,171
17	Financial Administration and Program	32,801
18	General Natural Resources Management and Biological Sciences	28,385
19	Social Insurance Administration	26,336
20	Customs and Border Protection	26,205
21	Social Work	23,864
22	Logistics Management	23,810
23	Air Traffic Control	20,721
24	Veterans Claims Examining	20,446
25	General Health Science	20,339
26	Security Administration	20,053
27	Program Management	19,350
28	Border Patrol Enforcement Series	19,250
29	Practical Nurse	17,743
30	Engineering Technical	16,312
31	Correctional Officer	15,996
32	Social Science	15,599
33	Budget Analysis	15,480
34	Electronics Engineering	15,392
35	Tax Examining	15,215
36	Pharmacist	14,934
37	Nursing Assistant	14,923
38	Intelligence	14,757
39	Mechanical Engineering	14,519
40	General Education and Training	13,748
41	Police	13,676
42	Emergency Management Specialist	13,667
43	Health Aid and Technician	13,353
44	Accounting	13,276
45	Custodial Working	12,745
46	Civil Engineering	12,414
47	Internal Revenue Agent	11,568
48	Computer Science	11,390
49	Forestry Technician	11,381
50	Auditing	11,094
51	Psychology	11,079
52	Maintenance Mechanic	10,702
53	Training Instruction	10,585
54	General Physical Science	10,323
55	Administrative Officer	10,002
56	Aerospace Engineering	9,928
57	General Legal and Kindred Administration	9,754
58	Quality Assurance	9,581
59	Patent Examining	9,513
60	Fire Protection and Prevention	9,509
61	Aircraft Mechanic	9,018
62	Transportation Specialist	8,729
63	Health System Specialist	8,572
64	Supply Clerical and Technician	8,333
65	Human Resources Assistance	8,332
66	Electronics Technical	8,135
67	Pharmacy Technician	7,749
68	Public Affairs	7,623
69	Secretary	7,494
70	Inventory Management	7,394
71	Education and Training Technician	6,892
72	Safety and Occupational Health Management	6,680
73	Misc Transportation/Mobile Equipmt Maintne	6,679
74	Financial Clerical and Assistance	6,600
75	Materials Handler	6,277
76	Paralegal Specialist	6,251
77	Medical Technologist	6,218
78	Equipment Facilities, and Services	6,212
79	Diagnostic Radiologic Technologist	6,121
80	Equipment Services	6,044
81	Financial Institution Examining	6,010
82	Electrical Engineering	6,003
83	Loan Specialist	5,934
84	Sheet Metal Mechanic	5,876
85	Operations Research	5,862
86	Food Service Working	5,834
87	Environmental Protection Specialist	5,807
88	Biological Science Technician	5,597
89	Production Control	5,494
90	Consumer Safety Inspection	5,359
91	Education and Vocational Training	5,326
92	Medical Records Technician	5,271
93	Supply Program Management	5,219
94	Chemistry	5,165
95	Electrician	5,104
96	Heavy Mobile Equipment Mechanic	5,059
97	Economist	4,888
98	Security Guard	4,887
99	Soil Conservation	4,882
100	Accounting Technician	4,837
101	Public Health Program Specialist	4,822
102	Motor Vehicle Operating	4,740
103	Computer Engineering	4,705
104	Telecommunications	4,568
105	Management and Program Clerical and Assistance	4,415
106	Medical Instrument Technician	4,378
107	Aviation Safety	4,316
108	Grants Management	4,182
109	Electronics Mechanic	4,144
110	Legal Assistance	4,124
111	General Supply	4,056
112	Realty	4,031
113	Security Clerical and Assistance	3,994
114	Physician Assistant	3,956
115	General Arts and Information	3,933
116	Hearings and Appeals	3,910
117	Cooking	3,905
118	Foreign Affairs	3,843
119	Statistics	3,843
120	Painting	3,831
121	Physical Therapist	3,783
122	Facility Operations Services	3,770
123	Park Ranger	3,762
124	Consumer Safety	3,635
125	Dental Assistant	3,541
126	Pipefitting	3,482
127	Dietitian and Nutritionist	3,448
128	Internal Revenue Officer	3,426
129	Medical Supply Aide and Technician	3,319
130	Transportation Clerk and Assistant	3,294
131	Machining	3,136
132	Equal Employment Opportunity	3,120
133	Environmental Engineering	3,098
134	Nuclear Engineering	3,000
135	Purchasing	2,984
136	Government Information Specialist	2,967
137	Engineering Equipment Operating	2,956
138	Marine Machinery Mechanic	2,954
139	Health Insurance Administration	2,878
140	Medical Technician	2,866
141	Electronic Integrated Systems Mechanic	2,829
142	Aircraft Operation	2,781
143	General Investigation	2,766
144	Meteorology	2,727
145	Misc General Maintenance & Operations Work	2,672
146	Speech Pathology and Audiology	2,504
147	Air Conditioning Equipment Mechanic	2,491
148	Welding	2,478
149	Instructional Systems	2,431
150	Investigative Analysis	2,398
151	Support Services Administration	2,346
152	Physics	2,312
153	Dental Officer	2,253
154	Store Working	2,216
155	Transportation Operations	2,202
156	Occupational Therapist	2,185
157	Passport and Visa Examining	2,086
158	Utility Systems Repairing-Operating	2,083
159	Wildlife Biology	2,082
160	Misc Warehousing and Stock Handling	2,059
161	Architecture	2,054
162	Mail and File	2,029
163	Aircraft Engine Mechanic	2,010
164	Fish Biology	1,992
165	Housing Management	1,974
166	Microbiology	1,940
167	Construction Control Technical	1,922
168	Rigging	1,909
169	Wildland Fire Management	1,908
170	Hydrology	1,903
171	Forestry	1,870
172	Veterinary Medical Science	1,865
173	Sales Store Clerical	1,830
174	Correctional Institution Administration	1,815
175	High Voltage Electrician	1,810
176	Physical Science Technician	1,794
177	Traffic Management	1,782
178	Archeology	1,719
179	Visual Information	1,672
180	Agricultural Commodity Grading	1,665
181	Powered Support Systems Mechanic	1,657
182	Miscellaneous Aircraft Overhaul	1,655
183	Mathematical Statistics	1,645
184	Hydrologic Technician	1,636
185	Social Science Aid and Technician	1,628
186	Administration and Office Support Student Trainee	1,587
187	Legal Instruments Examining	1,570
188	Materials Examining and Identifying	1,539
189	Laboring	1,528
190	Industrial Hygiene	1,524
191	Dispatching	1,505
192	Optometrist	1,493
193	Geology	1,469
194	Archives Technician	1,456
195	Military Pay	1,456
196	Invalid	1,419
197	Rehabilitation Therapy Assistant	1,398
198	Office Automation Clerical and Assistance	1,389
199	Administrative Law Judge	1,384
200	Data Science Series	1,365

What this data cannot show

These are OPM’s occupational series, which are job classifications rather than job titles. A reader looking for “doctor” finds “medical officer”.
OPM does not publish every federal employee. The intelligence community and some Department of Defense positions are excluded.
This table shows the largest 200 of 635 occupational series OPM published for the period.

Sources

OPM FedScope Employment Summary Data — U.S. Office of Personnel Management · U.S. Government work, public domain (17 U.S.C. 105) · retrieved September 19, 2026

Last updated September 19, 2026

Federal civilian employees by occupational series · March 1, 2025

What this data cannot show

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