What Network and Computer Systems Administrators earn in DuPage County, IL
According to the latest federal wage data for the Chicago-Naperville-Elgin, IL-IN metropolitan area, the median pay for Network and Computer Systems Administrators in DuPage County, IL is $103,170 a year, or $49.60 an hour. After federal income tax, Social Security, Medicare and state income tax, the paycheck shrinks to $76,165 a year, and rent, food and energy take another bite. The sections below walk through each step with the actual math for DuPage County, IL.
The mean wage is $108,870, which is 5.5% above the median, a sign that a group of high earners lifts the average. The survey counts about 6,950 people working in this occupation across the Chicago-Naperville-Elgin, IL-IN metropolitan area, so the estimate rests on a substantial pool of workers. DuPage County, IL has roughly 930,024 residents, according to the population figures used by the rent data.
The salary range, from entry level to top earners
Pay for Network and Computer Systems Administrators in the Chicago-Naperville-Elgin, IL-IN metropolitan area is not one number. The lowest-paid tenth of workers earn up to $68,990 a year ($33.17 an hour), while the highest-paid tenth earn $162,290 or more ($78.02 an hour). That is a gap of $93,300 between the bottom and the top of the scale. The middle half of workers falls between $82,750 at the 25th percentile and $130,120 at the 75th percentile. A top-tier earner makes 2.4 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: $49.60 an hour or $103,170 a year at the median for DuPage County, IL. Before any deductions, that is $8,598 a month, $3,968 every two weeks and $1,984 each week. After taxes the same job pays $36.62 per hour of take-home income, which is the number that actually has to cover rent and groceries.
About this occupation: Network and Computer Systems Administrators
The U.S. Department of Labor's O*NET database describes the work of Network and Computer Systems Administrators this way: "Install, configure, and maintain an organization's local area network (LAN), wide area network (WAN), data communications network, operating systems, and physical and virtual servers. Perform system monitoring and verify the integrity and availability of hardware, network, and server resources and systems. Review system and application logs and verify completion of scheduled jobs, including system backups. Analyze network and server resource consumption and control user access. Install and upgrade software and maintain software licenses. May assist in network modeling, analysis, planning, and coordination between network and data communications hardware and software."
Core tasks recorded by O*NET include: "Perform data backups and disaster recovery operations"; "Maintain and administer computer networks and related computing environments, including computer hardware, systems software, applications software, and all configurations"; "Plan, coordinate, and implement network security measures to protect data, software, and hardware"; "Operate master consoles to monitor the performance of computer systems and networks and to coordinate computer network access and use".
Job outlook for Network and Computer Systems Administrators
The Bureau of Labor Statistics projects national employment in this occupation to shrink from 323,600 jobs in 2025 to 310,400 in 2035, a change of -4.1%, slower than the 3.5% projected for all occupations. The projection counts 13,400 openings a year on average, including positions created by growth and positions left by workers who retire or move to another occupation; that equals 4.1% of current employment each year.
Typical entry-level education: bachelor's degree. BLS lists a national median annual wage of $99,130 for this occupation; the DuPage County, IL median of $103,170 is 4.1% above it.
How pay in DuPage County, IL compares
Compared with the Illinois average
A worker in this occupation in DuPage County, IL earns $5,150 more than the Illinois average of $98,020, a premium of 5.3%. Over a year that premium is worth $5,150 before tax and roughly $3,802 after tax. Within Illinois, DuPage County, IL already has the highest median we track for this job.
Compared with the national average
The national employment-weighted average for Network and Computer Systems Administrators is $99,653 across the contiguous United States. At $103,170, DuPage County, IL pays $3,517 more, which is 3.5% 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 DuPage County, IL
Among the 618 occupations with published wages in DuPage County, IL, Network and Computer Systems Administrators ranks number 107 by median pay, ahead of about 83% of them. The best-paying occupation we track here is Computer and Information Systems Managers at $173,760 a year, which is $70,590 more than the median for Network and Computer Systems Administrators.
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 Network and Computer Systems Administrators earning the DuPage County, IL median of $103,170, they add up to $27,005. The result is $76,165 of take-home pay a year ($6,347 a month), based on a single filer using the standard deduction.
Put another way, of every $100 earned, about $26 goes to taxes and $74 reaches the paycheck. The overall effective tax rate is 26.2%.
Federal income tax
After the $15,750 standard deduction, taxable income is $87,420. 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 $14,146, an effective 13.7% 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 $6,397 on this salary. Medicare takes 1.45%, or $1,496. FICA totals $7,893, which is 7.6% of gross pay.
State income tax in Illinois
Illinois income tax on this salary is $4,966 a year, or 4.8% of gross pay, after the state's own deductions and exemptions are applied. That is 35% of the federal income tax bill, and it comes out to $414 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 DuPage County, IL
IRS Statistics of Income data for DuPage County, IL show an average adjusted gross income of $132,198 per return and an average effective federal income tax rate of 17.0% across all filers. Filers in the $100,000 to under $200,000 bracket, where this salary falls, paid an average of 11.5%, compared with the 13.7% 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 DuPage County, IL
Take-home pay only means something next to what life costs. We price four basics for one adult in DuPage County, IL: a one-bedroom apartment, food, home energy and gasoline. All of them are converted to annual figures first, then compared with the $76,165 of take-home pay.
Rent
Housing is the largest line in most budgets. For DuPage 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 Network and Computer Systems Administrators, a one-bedroom absorbs 28.0% of take-home pay and 20.7% 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 3.3% of gross pay for Network and Computer Systems Administrators in DuPage 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 DuPage County, IL. Subtract that from $76,165 of take-home pay and $47,788 remains, which is $3,982 a month of breathing room. That margin equals 46.3% of gross pay, a comfortable cushion by common budgeting rules.
Local housing and commute data for DuPage County, IL
The budget above covers rent, food, energy and gasoline. Three more local facts shape what a paycheck buys in DuPage County, IL: property taxes, housing prices and the daily commute. The figures below are exact U.S. Census Bureau American Community Survey 2020-2024 5-year estimates for DuPage County, IL, set beside the Illinois and national medians.
Property taxes in DuPage County, IL
Homeowners in DuPage County, IL pay a median of $8,007 a year in real estate taxes, 51% above the Illinois median of $5,298 and 157% above the U.S. median of $3,119. Against a median home value of $391,400, the median tax bill is 2.05% of that value (the ratio of the two county medians). For a worker paid the local Network and Computer Systems Administrators median of $103,170, a tax bill of that size would equal 7.8% of gross pay, which matters for anyone planning to buy rather than rent.
Rents, home prices and household income in DuPage County, IL
Renters in DuPage County, IL pay a median gross rent of $1,688 a month in the Census survey, 32% above the Illinois median of $1,274. HUD's Fair Market Rent for a one-bedroom apartment, which this site uses in the budget, is $1,780 a month; the two measures differ because the Census figure covers units of every size that renters already occupy, while the HUD figure is a one-bedroom benchmark. The median value of an owner-occupied home is $391,400, 49% above the Illinois median of $263,300. Median household income is $112,096, 34% above the Illinois median of $83,390, so a year of one-bedroom Fair Market Rent equals 19.1% of that income.
Commuting in DuPage County, IL
Workers in DuPage County, IL who travel to a workplace spend an average of 27.7 minutes each way, in line with the Illinois average of 27.8. For someone who commutes five days a week, that is 4.6 hours of round-trip travel every week, a cost the budget does not price. 21.5% of workers in DuPage County, IL work from home, compared with 15.1% nationally, which removes the commute for them.
Can Network and Computer Systems Administrators afford to live in DuPage 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 $103,170 that ceiling is $2,579 a month. The one-bedroom Fair Market Rent of $1,780 is $799 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 Network and Computer Systems Administrators is $49.60, which is 45% above that mark. Another way to see it: at $36.62 of take-home pay an hour, a one-bedroom takes about 11.2 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 $57,082.
How fast you can save
At $3,982 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 Network and Computer Systems Administrators pay in DuPage County, IL
How much do Network and Computer Systems Administrators make per hour in DuPage County, IL?
The median is $49.60 per hour, based on $103,170 a year over 2,080 hours. Hourly pay runs from about $33.17 at the 10th percentile to $78.02 at the 90th percentile.
How much do Network and Computer Systems Administrators take home after taxes in DuPage County, IL?
After federal income tax, FICA and state income tax, the median salary of $103,170 becomes $76,165 a year. That is $6,347 a month, $2,929 every two weeks or $1,465 a week.
How much tax do Network and Computer Systems Administrators pay in DuPage County, IL?
Total taxes are $27,005 a year, an effective rate of 26.2%: $14,146 federal income tax, $7,893 FICA and $4,966 Illinois income tax.
Do Network and Computer Systems Administrators earn more in DuPage County, IL than elsewhere in Illinois?
Yes. The local median of $103,170 is +5.3% versus the Illinois average of $98,020, a difference of $5,150 a year.
Can Network and Computer Systems Administrators afford a one-bedroom apartment in DuPage County, IL?
A one-bedroom costs $1,780 a month against take-home pay of $6,347, which is 28.0% of take-home pay. That meets the 30%-of-gross guideline, which allows up to $2,579 a month.
What is the monthly budget margin for Network and Computer Systems Administrators in DuPage County, IL?
About $3,982 a month ($47,788 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 DuPage 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 Network and Computer Systems Administrators is $49.60.
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.