Biological Science Teachers, Postsecondary salary in Illinois
Biological Science Teachers, Postsecondary in Illinois earn a median of $99,060 a year, based on BLS data for 2,340 workers.
Pay ranges from $47,340 for the lowest-paid 10% to $207,930 for the top 10%. That is 17% higher than the national median of $84,620. Illinois ranks 9th of 49 states for biological science teachers, postsecondary pay. There are 0.38 biological science teachers, postsecondary per 1,000 jobs here — close to the national average. The average (mean) salary is $108,130, above the median because a few high earners pull it up.
Pay range for biological science teachers, postsecondary in Illinois
| Pay level | Yearly |
|---|---|
| 10th percentile (entry level) | $47,340 |
| 25th percentile | $62,740 |
| Median | $99,060 |
| 75th percentile | $132,780 |
| 90th percentile (top earners) | $207,930 |
| Average (mean) | $108,130 |
Half of biological science teachers, postsecondary 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 | $8,255 |
| Semi-monthly (24 a year) | $4,127.50 |
| Biweekly (26 a year) | $3,810 |
| Weekly | $1,905 |
BLS publishes only yearly pay for this job, because biological science teachers, postsecondary are usually paid a salary and may not work a full 2,080-hour year. Convert any amount with the hourly to salary converter.
Biological Science Teachers, Postsecondary salary in cities in Illinois
| Metro area | Median salary | Workers |
|---|---|---|
| Chicago-Naperville-Elgin, IL-IN | $101,960 | 1,760 |
| St. Louis, MO-IL | $97,120 | 470 |
| Bloomington, IL | $87,620 | 50 |
| Davenport-Moline-Rock Island, IA-IL | $76,160 | 60 |
Highest-paying states for biological science teachers, postsecondary
| State | Median salary |
|---|---|
| California | $129,150 |
| Massachusetts | $105,050 |
| Michigan | $103,620 |
| New Hampshire | $102,410 |
| Rhode Island | $102,300 |
| Delaware | $101,380 |
| Oregon | $100,820 |
| Montana | $100,480 |
| Illinois | $99,060 |
| New Mexico | $98,820 |
See Biological Science Teachers, Postsecondary pay in every state.
Related jobs in Illinois
More: Educational Instruction and Library Occupations · all salaries in Illinois
Source: U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2025 estimates, occupation code 25-1042. 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 biological science teachers, postsecondary make in Illinois?
The median salary for biological science teachers, postsecondary in Illinois is $99,060 a year. Pay ranges from $47,340 for the lowest-paid 10% to $207,930 for the top 10%.
How much do the highest-paid biological science teachers, postsecondary make in Illinois?
The top 10% of biological science teachers, postsecondary in Illinois earn at least $207,930 a year. The top 25% earn $132,780 or more.
What is the starting pay for biological science teachers, postsecondary in Illinois?
Entry-level pay (the 10th percentile) is about $47,340 a year, and a quarter of biological science teachers, postsecondary earn $62,740 or less.
How many biological science teachers, postsecondary work in Illinois?
About 2,340 biological science teachers, postsecondary are employed in Illinois, not counting the self-employed.