Chemistry federal salary series 1320
Full-time federal employees in the Chemistry series earned a median of $146,143 in annualized adjusted basic pay in September 2026, 33% above the all-federal median of $109,641. The middle half earned between $121,785 and $177,497.
What shapes chemistry pay
The most common grade with published pay is GS-13 (1,053 employees, median $138,370). The largest employer of this series with published pay is the Department of Health and Human Services (1,436 employees). Among states with at least 30 full-time employees with published pay, the median is highest in Maryland ($172,700) and lowest in Kansas ($118,261), a gap that partly reflects locality pay differences. Federal pay depends mostly on grade and step, plus a locality adjustment for where the job is located; see the GS pay scale explainer.
OPM withheld pay for 39% of employees in this series. The figures here describe only employees with published pay; withholding is concentrated in certain agencies (see data coverage).
Chemistry pay by grade
Grades with at least 30 full-time employees with published pay. GS grades are listed first; other pay plans follow.
| Pay plan–grade | Employees | Median pay |
|---|---|---|
| GS-11 | 229 | $88,818 |
| GS-12 | 769 | $112,196 |
| GS-13 | 1,053 | $138,370 |
| GS-14 | 456 | $169,644 |
| GS-15 | 172 | $197,200 |
| RF (ungraded) | 80 | $233,862 |
| RG (ungraded) | 200 | $157,832 |
| ZP-3 | 66 | $114,350 |
| ZP-4 | 105 | $170,204 |
| ZP-5 | 50 | $197,200 |
middle 50% (25th–75th percentile) 10th–90th percentile median all-federal median ($109,641)
Chemistry pay by agency
| Agency | Employees | Median pay |
|---|---|---|
| Department of Health and Human Services | 1,436 | $150,740 |
| Department of Justice | 400 | $154,263 |
| Environmental Protection Agency | 329 | $132,604 |
| Department of Agriculture | 237 | $124,177 |
| Department of Commerce | 228 | $163,514 |
| Department of Homeland Security | 180 | $146,143 |
| Department of the Interior | 113 | $111,513 |
| Department of the Treasury | 56 | $135,970 |
middle 50% (25th–75th percentile) 10th–90th percentile median all-federal median ($109,641)
Chemistry pay by state
The 10 states with the most employees in this series and published pay.
| State | Employees | Median pay |
|---|---|---|
| Maryland | 1,041 | $172,700 |
| District of Columbia | 312 | $150,203 |
| Georgia | 234 | $123,812 |
| Colorado | 138 | $123,088 |
| California | 95 | $145,917 |
| Ohio | 82 | $133,039 |
| North Carolina | 65 | $140,787 |
| Kansas | 60 | $118,261 |
| Virginia | 58 | $158,322 |
| Missouri | 58 | $122,160 |
middle 50% (25th–75th percentile) 10th–90th percentile median all-federal median ($109,641)
Compare chemistry pay across all states and agencies →
Change since September 2025
The median moved +1.0% from $144,697 in September 2025 to $146,143 in September 2026. Headcount went from 4,895 to 4,437 (−9.4%). A change in the median reflects both pay adjustments and who joined or left the workforce, so it is not the same as a pay raise.
Related occupations in Physical Sciences Group
- General Physical Science (1301)$142,712
- Meteorology (1340)$120,983
- Physics (1310)$186,963
- Physical Science Technician (1311)$77,083
- Hydrology (1315)$113,378
- Hydrologic Technician (1316)$75,262
- Geology (1350)$121,052
- Health Physics (1306)$146,143