What Police and Sheriff's Patrol Officers earn in Cook County, IL
According to the latest federal wage data for the Chicago-Naperville-Elgin, IL-IN metropolitan area, the median pay for Police and Sheriff's Patrol Officers in Cook County, IL is $107,810 a year, or $51.83 an hour. After federal income tax, Social Security, Medicare and state income tax, the paycheck shrinks to $79,200 a year, and rent, food and energy take another bite. The sections below walk through each step with the actual math for Cook County, IL.
The mean wage is $99,230, which is 8.0% below the median, which suggests many workers sit near the top of the pay scale. The survey counts about 22,680 people working in this occupation across the Chicago-Naperville-Elgin, IL-IN metropolitan area, so the estimate rests on a substantial pool of workers. Cook County, IL has roughly 5,182,090 residents, according to the population figures used by the rent data.
The salary range, from entry level to top earners
Pay for Police and Sheriff's Patrol Officers in the Chicago-Naperville-Elgin, IL-IN metropolitan area is not one number. The lowest-paid tenth of workers earn up to $63,450 a year ($30.50 an hour), while the highest-paid tenth earn $123,130 or more ($59.20 an hour). That is a gap of $59,680 between the bottom and the top of the scale. The middle half of workers falls between $86,630 at the 25th percentile and $107,810 at the 75th percentile. A top-tier earner makes 1.9 times what someone at the bottom makes, so experience, certification and employer all matter.
What the hourly rate looks like
Employers quote this occupation by the hour or by the year, so here are both: $51.83 an hour or $107,810 a year at the median for Cook County, IL. Before any deductions, that is $8,984 a month, $4,147 every two weeks and $2,073 each week. After taxes the same job pays $38.08 per hour of take-home income, which is the number that actually has to cover rent and groceries.
How pay in Cook County, IL compares
Compared with the Illinois average
A worker in this occupation in Cook County, IL earns $13,660 more than the Illinois average of $94,150, a premium of 14.5%. Over a year that premium is worth $13,660 before tax and roughly $10,035 after tax. Within Illinois, Cook County, IL already has the highest median we track for this job.
Compared with the national average
The national employment-weighted average for Police and Sheriff's Patrol Officers is $80,171 across the contiguous United States. At $107,810, Cook County, IL pays $27,639 more, which is 34.5% above that benchmark. Keep in mind that a higher salary only helps if living costs do not rise faster, which is why the cost sections below matter as much as the headline number.
Where this job ranks in Cook County, IL
Among the 618 occupations with published wages in Cook County, IL, Police and Sheriff's Patrol Officers ranks number 88 by median pay, ahead of about 86% of them. The best-paying occupation we track here is Computer and Information Systems Managers at $173,760 a year, which is $65,950 more than the median for Police and Sheriff's Patrol Officers.
From gross pay to take-home pay
Three separate tax bills sit between the gross salary and the bank account: federal income tax, FICA, and state income tax. For Police and Sheriff's Patrol Officers earning the Cook County, IL median of $107,810, they add up to $28,610. The result is $79,200 of take-home pay a year ($6,600 a month), based on a single filer using the standard deduction.
Put another way, of every $100 earned, about $27 goes to taxes and $73 reaches the paycheck. The overall effective tax rate is 26.5%.
Federal income tax
After the $15,750 standard deduction, taxable income is $92,060. Federal brackets are marginal, so only the slice of income above each threshold is taxed at the higher rate; the last dollars of this salary fall in the 22% bracket. The resulting federal income tax is $15,167, an effective 14.1% of gross pay, well below the 22% marginal rate because the lower brackets are cheaper.
Social Security and Medicare (FICA)
Payroll taxes are a flat percentage of wages. Social Security takes 6.2% up to a wage base of $176,100, which costs $6,684 on this salary. Medicare takes 1.45%, or $1,563. FICA totals $8,247, which is 7.6% of gross pay.
State income tax in Illinois
Illinois income tax on this salary is $5,196 a year, or 4.8% of gross pay, after the state's own deductions and exemptions are applied. That is 34% of the federal income tax bill, and it comes out to $433 a month. Local taxes such as county or city income taxes are not included, so a few jurisdictions may withhold slightly more.
A cross-check with IRS data for Cook County, IL
IRS Statistics of Income data for Cook County, IL show an average adjusted gross income of $105,065 per return and an average effective federal income tax rate of 16.4% across all filers. Filers in the $100,000 to under $200,000 bracket, where this salary falls, paid an average of 12.3%, compared with the 14.1% estimated here for a single filer taking the standard deduction. Gaps between the two reflect filing status, dependents, credits and other income, none of which a single-person wage estimate includes.
Cost of living in Cook County, IL
Take-home pay only means something next to what life costs. We price four basics for one adult in Cook County, IL: a one-bedroom apartment, food, home energy and gasoline. All of them are converted to annual figures first, then compared with the $79,200 of take-home pay.
Rent
Housing is the largest line in most budgets. For Cook County, IL, HUD sets the Fair Market Rent for a one-bedroom unit at $1,780 a month ($21,360 a year), and at $2,011 for two bedrooms. For Police and Sheriff's Patrol Officers, a one-bedroom absorbs 27.0% of take-home pay and 19.8% of gross pay.
Food
The USDA Thrifty Food Plan (August 2026) puts the cost of a nutritious home-cooked diet for an adult at about $3,436 a year, which is $286 a month or $66.07 a week. That equals 3.2% of gross pay for Police and Sheriff's Patrol Officers in Cook County, IL. It is a thrifty budget with no restaurant meals, so treat it as a floor.
Energy and gasoline
Using Illinois residential prices from the Energy Information Administration and national household averages for consumption, electricity costs about $1,677 a year and other home energy such as natural gas about $434, for $2,110 in total. Gasoline in Illinois averages $3.18 per gallon; at about 463 gallons a year (11,106 miles at 24 miles per gallon) fuel adds $1,471.
What is left over
Rent, food, energy and gasoline cost $28,377 a year in Cook County, IL. Subtract that from $79,200 of take-home pay and $50,823 remains, which is $4,235 a month of breathing room. That margin equals 47.1% of gross pay, a comfortable cushion by common budgeting rules.
Can Police and Sheriff's Patrol Officers afford to live in Cook County, IL?
The 30% rent guideline
A common rule of thumb says rent should stay under 30% of gross income. For a gross salary of $107,810 that ceiling is $2,695 a month. The one-bedroom Fair Market Rent of $1,780 is $915 under it, so rent fits the guideline. Put as a wage, covering a one-bedroom at the 30% guideline takes $34.23 an hour; the median for Police and Sheriff's Patrol Officers is $51.83, which is 51% above that mark. Another way to see it: at $38.08 of take-home pay an hour, a one-bedroom takes about 10.8 working hours every week.
Splitting a two-bedroom
Sharing a two-bedroom at $2,011 a month means $1,006 each. Compared with renting a one-bedroom alone, that saves $9,294 a year. With a roommate, the yearly margin after the basics becomes $60,117.
How fast you can save
At $4,235 a month of margin, building a $10,000 emergency fund would take about 3 months. Setting aside half of the margin stretches the same goal to about 6 months. These figures ignore interest, raises and any spending beyond the four basics.
Frequently asked questions about Police and Sheriff's Patrol Officers pay in Cook County, IL
How much do Police and Sheriff's Patrol Officers make per hour in Cook County, IL?
The median is $51.83 per hour, based on $107,810 a year over 2,080 hours. Hourly pay runs from about $30.50 at the 10th percentile to $59.20 at the 90th percentile.
How much do Police and Sheriff's Patrol Officers take home after taxes in Cook County, IL?
After federal income tax, FICA and state income tax, the median salary of $107,810 becomes $79,200 a year. That is $6,600 a month, $3,046 every two weeks or $1,523 a week.
How much tax do Police and Sheriff's Patrol Officers pay in Cook County, IL?
Total taxes are $28,610 a year, an effective rate of 26.5%: $15,167 federal income tax, $8,247 FICA and $5,196 Illinois income tax.
Do Police and Sheriff's Patrol Officers earn more in Cook County, IL than elsewhere in Illinois?
Yes. The local median of $107,810 is +14.5% versus the Illinois average of $94,150, a difference of $13,660 a year.
Can Police and Sheriff's Patrol Officers afford a one-bedroom apartment in Cook County, IL?
A one-bedroom costs $1,780 a month against take-home pay of $6,600, which is 27.0% of take-home pay. That meets the 30%-of-gross guideline, which allows up to $2,695 a month.
What is the monthly budget margin for Police and Sheriff's Patrol Officers in Cook County, IL?
About $4,235 a month ($50,823 a year) remains after a one-bedroom apartment, food, home energy and gasoline, which together cost $28,377 a year.
What hourly wage covers a one-bedroom in Cook County, IL at the 30% guideline?
$34.23 an hour for a full-time schedule, calculated as the $21,360 annual rent divided by 0.30 and by 2,080 hours. The median for Police and Sheriff's Patrol Officers is $51.83.
How we calculated these numbers
Wages are May 2025 medians from the Bureau of Labor Statistics Occupational Employment and Wage Statistics survey for the Chicago-Naperville-Elgin, IL-IN metropolitan area; hourly-only values are annualized at 2,080 hours. Rents are HUD Fair Market Rents, food costs come from the USDA Thrifty Food Plan, and energy prices come from the Energy Information Administration. County-level tax statistics come from the IRS Statistics of Income.
Taxes use tax-year 2025 federal brackets, FICA rates and the Illinois rules for a single filer with wage income only. Figures are estimates for planning and comparison, not tax or financial advice, and they exclude local income taxes, benefits, retirement contributions and individual circumstances.