Environmental Engineer salary in St. Louis, MO-IL
Environmental Engineers in the St. Louis, MO-IL metro area earn a median of $94,980 a year ($45.66 an hour), based on BLS data for 230 workers.
Pay ranges from $56,430 for the lowest-paid 10% to $128,650 for the top 10%. That is 11% lower than the national median of $107,110. Pay here is 3% lower than the Missouri statewide median of $98,170. There are 0.17 environmental engineers per 1,000 jobs here — the job is less common than nationally (location quotient 0.69). The average (mean) salary is $97,540, above the median because a few high earners pull it up.
Pay range for environmental engineers in St. Louis, MO-IL
| Pay level | Yearly | Hourly |
|---|---|---|
| 10th percentile (entry level) | $56,430 | $27.13 |
| 25th percentile | $65,160 | $31.33 |
| Median | $94,980 | $45.66 |
| 75th percentile | $125,070 | $60.13 |
| 90th percentile (top earners) | $128,650 | $61.85 |
| Average (mean) | $97,540 | $46.89 |
Half of environmental engineers earn more than the median and half earn less. Percentiles show the spread: 10% earn less than the 10th percentile, and 10% earn more than the 90th.
Median paycheck, before taxes
| Pay period | Amount |
|---|---|
| Monthly | $7,915 |
| Semi-monthly (24 a year) | $3,957.50 |
| Biweekly (26 a year) | $3,653.08 |
| Weekly | $1,826.54 |
| Hourly | $45.66 |
Based on a full-time year of 2,080 hours. Convert any amount with the hourly to salary converter.
Environmental Engineer salary in other metro areas nearby
| Metro area | Median salary | Workers |
|---|---|---|
| Chicago-Naperville-Elgin, IL-IN | $110,700 | 660 |
| Springfield, IL | $103,190 | 120 |
| Kansas City, MO-KS | $97,180 | 270 |
Highest-paying states for environmental engineers
| State | Median salary |
|---|---|
| Louisiana | $130,510 |
| California | $130,410 |
| Oregon | $127,100 |
| Washington | $125,460 |
| Texas | $123,060 |
| Nebraska | $120,620 |
| Idaho | $117,520 |
| Florida | $116,840 |
| Massachusetts | $115,800 |
| Minnesota | $115,750 |
See Environmental Engineer pay in every state or the Missouri statewide figures.
Related jobs in St. Louis, MO-IL
| Job | Median salary | Hourly |
|---|---|---|
| Civil Engineer | $96,830 | $46.55 |
| Industrial Engineer | $102,230 | $49.15 |
| Mechanical Engineer | $100,340 | $48.24 |
| Electrical Engineer | $123,960 | $59.59 |
| Engineers, All Other | $103,880 | $49.94 |
| Computer Hardware Engineer | $112,490 | $54.08 |
| Electronics Engineers, Except Computer | $120,020 | $57.70 |
| Health and Safety Engineers, Except Mining Safety Engineers and Inspectors | $92,350 | $44.40 |
| Materials Engineer | $114,670 | $55.13 |
| Chemical Engineer | $133,450 | $64.16 |
| Agricultural Engineer | $124,340 | $59.78 |
| Bioengineers and Biomedical Engineers | $80,440 | $38.67 |
| Architectural and Civil Drafters | $62,430 | $30.01 |
| Architects, Except Landscape and Naval | $98,800 | $47.50 |
More: Architecture and Engineering Occupations · all salaries in St. Louis, MO-IL
Source: U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2025 estimates, occupation code 17-2081. Wages include base pay, tips, commissions and shift pay, but not overtime, bonuses or benefits, and exclude the self-employed.
Frequently asked questions
How much does a environmental engineer make in St. Louis, MO-IL?
The median salary for environmental engineers in the St. Louis, MO-IL metro area is $94,980 a year, or $45.66 an hour. Pay ranges from $56,430 for the lowest-paid 10% to $128,650 for the top 10%.
How much do the highest-paid environmental engineers make in St. Louis, MO-IL?
The top 10% of environmental engineers in the St. Louis, MO-IL metro area earn at least $128,650 a year. The top 25% earn $125,070 or more.
What is the starting pay for environmental engineers in St. Louis, MO-IL?
Entry-level pay (the 10th percentile) is about $56,430 a year, and a quarter of environmental engineers earn $65,160 or less.
How many environmental engineers work in St. Louis, MO-IL?
About 230 environmental engineers are employed in the St. Louis, MO-IL metro area, not counting the self-employed.