Civil Engineer Salary in Illinois: Pay by Experience, City & Take-Home

A civil engineer in Illinois earns a median of $99,760 a year, according to the U.S. Bureau of Labor Statistics (2025). That works out to about $47.96 an hour. Most of the field lands between $69,590 at the 10th percentile and $157,410 at the 90th, so your number depends heavily on your experience, your metro, and whether you work public infrastructure or private design.

How Illinois compares to the national median

The national median for civil engineers is $100,840, per BLS (2025). Illinois sits at $99,760, which is $1,080 below the national figure. That’s a gap of about 1.1 percent, close enough that, for practical purposes, an Illinois civil engineer earns right at the national line. The state isn’t a top-paying market for the role, and it isn’t a discount one either. It pays the going rate.

The state mean is $105,390, which runs $5,630 above the median of $99,760. When the mean sits above the median like this, it tells you a cluster of senior engineers, project managers, and licensed PEs are pulling deep into six figures while the bulk of the field clusters nearer the middle. The average gets dragged up by the top of the distribution, so the $99,760 median is the more honest number to anchor your own expectations on.

Illinois employs about 13,910 civil engineers, which is one of the larger labor pools for the role in the Midwest. That depth matters when you’re job hunting. More employers, spread across transportation departments, water and sewer authorities, structural firms, and private land development, means more competing offers, and competing offers are the most reliable way to move from the median toward the 75th percentile of $125,990. The state’s aging roads, bridges, and water systems keep a steady pipeline of public work flowing through every region, not just Chicago.

Civil engineer pay by experience in Illinois

Experience is the single biggest lever on pay in this field. An engineer fresh out of school running drainage calcs and redlining plans earns nowhere near what a licensed PE managing a corridor reconstruction or a structural package takes home. Here’s how the Illinois numbers break out across the BLS percentile points.

The jump from entry to senior is steep. A 90th-percentile engineer earns $157,410, which is more than double the $69,590 an entry-level engineer makes. The first climb happens early: moving from the 10th to the 25th percentile adds $10,060, often just by clearing your first two or three years, passing the FE exam, and proving you can own a design without someone checking every line.

The stretch from median to experienced, $99,760 to $125,990, is where the PE license and specialization pay off. Engineers who get licensed and pick up structural, geotechnical, water resources, or transportation design tend to reach that $125,990 band faster than generalists. The top step, from $125,990 to $157,410, usually requires either a project-manager or principal title, a move into firm leadership, or deep expertise in a discipline that’s genuinely hard to replace.

It helps to translate these bands into a raise timeline. The full spread from the 10th percentile to the 90th is $87,820, the difference between $69,590 and $157,410. Spread that across a typical 20-to-25-year career and it implies you should be adding several thousand dollars a year, on average, just to stay on the curve. If your pay has flatlined for two or three years while you’re still below $99,760, the data says you’re underpaid for your tenure, not that the field has stopped paying.

One caution on reading percentiles: they describe the whole Illinois field at a single moment, not one person’s path over time. A 25th-percentile salary of $79,650 isn’t only entry-level workers. It also includes experienced engineers in lower-paying public agencies or smaller downstate firms. So treat the table as a map of where the money sits, then match your own license status, employer, and metro against it rather than assuming years of service alone will carry you up the ladder. The half of the distribution above the median, $99,760 up to $157,410, rewards engineers who stamp drawings and run projects end to end rather than executing tasks someone else scoped.

Civil engineer salary by Illinois metro

Where you work inside Illinois changes the math more than people expect. The state median is $99,760, but individual metros swing above and below it. Here are the largest metro areas for this role, ranked by employment.

Chicago is the obvious center of gravity, with 9,760 engineers, more than two thirds of the state’s total. Its median of $100,160 runs just above the statewide figure, which is what you’d expect from a large, diversified market where transit agencies, structural firms, land developers, and heavy-civil contractors all compete for the same skill set.

The standout is Springfield at $105,750, the highest median on the list and about $5,990 above the state figure. As the state capital, Springfield concentrates public-sector and transportation engineering tied to the Illinois Department of Transportation and other state agencies, and that government-anchored work carries steady, senior-leaning pay. With 440 engineers, it’s the second-largest market in the state, so the high median isn’t a thin-sample fluke. Champaign-Urbana ($98,910) sits just below the state line, shaped by the university and a smaller private base, and Peoria ($95,140) and Rockford ($94,850) trail despite real engineering presence in each.

The spread between the top and bottom metros here is real money. Springfield’s $105,750 median is $10,900 above Rockford’s $94,850 for what is, on paper, the same job title. That’s a larger swing than many engineers will ever get from a single promotion, and it comes purely from geography and the employer mix in each market. Before you accept an offer, check it against the metro median, not just the statewide $99,760, because a number that looks generous against the state figure can be merely average for Springfield or genuinely strong for Rockford.

Remote and hybrid work complicates this, and often in your favor. Civil engineering still leans on site visits, field inspection, and agency coordination, so fully remote roles are rarer here than in software-adjacent fields. But many Chicago and Springfield employers now hire engineers who live elsewhere in the state for design and analysis work, which means a downstate resident can sometimes capture a higher metro salary while paying downstate housing costs. When you negotiate a hybrid role, anchor your ask to the median of the employer’s headquarters metro rather than the town you commute from.

Employment density is also a signal of opportunity, not just pay. Chicago’s 9,760 engineers dwarf every other metro on the list, so even though its $100,160 median sits right at the state line, the sheer volume of openings gives you more shots at the experienced and senior bands. Springfield pairs a high median with a stable government client base, which is a rare combination for job security. Thinner markets like Champaign-Urbana, with 230 engineers, can pay well for the right role but offer far fewer chances to job-hop your way up.

Take-home pay after taxes in Illinois

Gross salary is not what hits your bank account. Illinois charges a flat 4.95 percent state income tax, so unlike states with brackets, your state rate doesn’t climb as you earn more. On top of that you pay federal income tax and FICA (Social Security and Medicare). Here’s the estimated breakdown at each career stage for a single filer taking the standard deduction, tax year 2026.

At the median, a civil engineer keeps $73,629 of a $99,760 salary, an effective all-in tax rate of about 26.2 percent. That’s $6,136 a month. Move up to the experienced band and you net $90,631, or $7,553 a month. A senior engineer at $157,410 clears $110,551 net, about $9,213 a month, the only stage where take-home runs well into six figures.

Here’s the comparison that actually matters if you’re weighing a relocation. The same median earnings in Texas, which has no state income tax, would net about $78,567. In Illinois you keep $73,629. That’s a gap of $4,938 a year, money the Illinois flat tax pulls out of your check that a Texas engineer keeps. Over a decade that’s nearly $50,000 in nominal dollars, before you factor in any raises that widen the gap further.

Notice how the effective rate climbs even though the state portion is flat. At entry the all-in rate is about 22.5 percent; at the median it’s 26.2 percent; by the senior band it reaches 29.8 percent. Every dollar of that increase comes from the federal side, since Illinois’ 4.95 percent stays constant. That’s why a raise from $125,990 to $157,410, worth $31,420 gross, only adds $19,920 to net annual pay, the difference between $90,631 and $110,551. Roughly a third of that raise goes to taxes. Knowing the marginal math helps you judge whether a counteroffer is actually worth chasing.

The FICA line is worth a second look too. At the median you pay $7,632 into Social Security and Medicare, and that figure scales nearly in lockstep with gross pay until you approach the Social Security wage cap. For most Illinois engineers below the senior band, FICA is a larger bite than the state income tax, $7,632 versus $4,938 at the median, which surprises people who fixate on the state rate when comparing offers across state lines.

But net pay alone is only half the picture. The number that really decides your standard of living is net pay minus local housing. Texas keeps more of your gross, yet fast-growing metros like Austin and Dallas have pushed housing costs up sharply, while much of Illinois outside Chicago’s prime neighborhoods stays comparatively affordable, and Springfield pairs its high $105,750 engineering median with some of the cheapest housing in the state. Run your own offer through the Illinois paycheck calculator, then subtract what a place to live actually costs in the metro you’re targeting. To model your full federal and state filing in one place, tax tools like TurboTax can estimate your real liability before you sign.

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How to earn more as a civil engineer in Illinois

The gap between the median ($99,760) and the experienced band ($125,990) is about $26,230. Closing it is mostly about the credentials you earn and the employer you choose. Concrete moves that work in this market:

• Earn your PE license. A Professional Engineer license is the single clearest line between a mid-band engineer and one trusted to stamp drawings. In civil engineering, almost every public-works contract, plat, and structural package needs a PE seal, so the license directly supports a move toward the $125,990 band. It typically follows the FE exam, four years of qualifying experience, and the PE exam.
• Target the Springfield public-sector market. Springfield’s $105,750 median runs about $5,990 above the state figure, anchored by state transportation and agency work. Those roles reward licensed engineers and offer pension and stability that private firms often can’t match.
• Specialize in structural, geotechnical, or water resources. Generalist civil engineers cluster around the median. Engineers who can run structural analysis, foundation design, or hydraulic and stormwater modeling command the experienced band because that skill set is harder to backfill.
• Build a regulated or technical niche. Floodplain management, bridge inspection, and environmental compliance pay a premium for engineers who understand the rules. Self-paced certificate programs on platforms like Coursera are a low-cost way to build toward AutoCAD Civil 3D, GIS, hydraulic modeling, or project-management credentials employers actually list.
• Move into project management. The step from $125,990 to the senior band at $157,410 almost always comes with a title change, project manager, principal, or department lead. Volunteer to own a corridor, a water-main replacement, or a development package end to end; that’s the work that justifies the bump.
• Pick the right setting. Private structural and heavy-civil firms, large transit agencies, and developer-side roles tend to pay more than small municipal departments. Two engineers with identical skills can be $20,000 apart based purely on whose projects they sign.
• Use competing offers. With 13,910 engineers employed statewide, this is a liquid market. A second offer in hand is the fastest, most reliable raise available, often worth more than a year of internal merit increases.

Put numbers on the payoff before you commit time to any of these. Moving from the median to the experienced band is worth about $26,230 a year in gross pay, $99,760 to $125,990. A PE license or a setting switch that takes a year or two to execute and delivers even half that lift pays for itself many times over. Rank your options by how reliably each one moves you toward $125,990, and start with the cheapest, fastest lever you haven’t pulled yet, which for most engineers is the PE license or a competing offer rather than a second degree.

One more point on timing. Raises compound. An engineer who reaches $125,990 at year ten instead of year fifteen doesn’t just earn more in those five years; every future raise is calculated off a higher base. The earlier you climb out of the median band, the larger the lifetime difference, which is the real argument for being aggressive about the PE license, specialization, and offers early rather than waiting for tenure to do the work.

Job outlook for civil engineers in Illinois

Illinois supports about 13,910 civil engineer jobs, one of the deeper labor pools for the role in the Midwest. The concentration in Chicago, with 9,760 of those positions, means most hiring activity sits in a single metro that draws from transit agencies, structural firms, land developers, and heavy-civil contractors. Springfield adds another 440 jobs anchored in state government and transportation work. That mix of employers is a buffer: when private development slows, public infrastructure keeps hiring, and the reverse holds too.

Demand for engineers who can design, inspect, and rehabilitate roads, bridges, water systems, and buildings holds up well because the state’s infrastructure keeps aging and federal and state funding cycles keep refilling the project pipeline. Civil work is tied to physical assets that have to be maintained no matter the economy, which gives the role a steadier footing here than in fields tied to a single private industry. To see what’s open right now and how postings stack up against these BLS figures, browse current listings on ZipRecruiter and compare the offered ranges to the percentiles above.

Related and higher-paying roles in Illinois

If you’re already in this field, the most useful comparison is to adjacent roles in the same state. Here’s how two common engineering neighbors pay against a civil engineer’s $99,760 Illinois median, using BLS (2025) figures.

A mechanical engineer in Illinois earns a median of $102,680, which is $2,920 more than a civil engineer in Illinois. An industrial engineer earns a median of $100,540, which is $780 more than a civil engineer in Illinois. Both sit just above civil engineering on pay, so a lateral move into either is roughly pay-neutral and won’t, by itself, change your standard of living much. The clearer path to more money in this field is climbing your own percentile ladder, from the $99,760 median toward the experienced $125,990 and senior $157,410 bands, rather than switching titles.

Frequently asked questions

Sources: U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics (OEWS) 2025; ThePayGuide tax modeling, tax year 2026. Last updated 2026. See our methodology.