How much does a Civil Engineer make in Idaho?

The average Civil Engineer salary in Idaho is around $100,000 per year. After federal taxes, FICA, and Idaho state taxes, your estimated take-home pay is approximately $74,733 annually ($6,228/month).

What is the take-home pay for a Civil Engineer in Idaho?

On a $100,000 salary in Idaho, your take-home pay is approximately $74,733/year or $6,228/month. Federal tax: $13,170. State tax: $4,447. FICA: $0.00.

Is $100,000 a good Civil Engineer salary?

$100,000 is a strong salary for a Civil Engineer — above the national median. In Idaho, demand for this role is active.

How do Idaho taxes affect Civil Engineer salaries?

Idaho levies state income tax on top of federal taxes. Your estimated state tax on $100,000 is $4,447. Your total effective tax rate is approximately 25.3%.

What are the career growth prospects for Civil Engineers?

5% growth through 2032 (faster than average). Related roles include: Structural Engineer, Environmental Engineer, Transportation Engineer, Geotechnical Engineer.

How can a Civil Engineer in Idaho reduce their tax bill?

Maximize your 401(k) contribution ($24,500 in 2026) to reduce taxable income. An HSA ($4,400 single / $8,750 family) adds further pre-tax savings. These strategies can save thousands annually — use our calculator to see your exact savings.

Engineering

Civil Engineer Salary in Idaho (2026)

The average Civil Engineer in Idaho earns around $100,000/year. After taxes, your estimated take-home is $74,733/year ($6,228/month).

Take-Home Pay Breakdown

Category	Amount
Annual Take-Home Pay	$74,733
Monthly Take-Home Pay	$6,228
Biweekly Take-Home Pay	$2,874
Hourly Take-Home Pay based on 2,080 hrs/year	$36/hr
Federal Tax	$13,170
State Tax	$4,447
FICA Taxes	$7,650
Effective Tax Rate total taxes ÷ gross salary	25.27%

Estimates only — not tax advice. · Full disclaimer →

Want to model 401(k), HSA, or pre-tax contributions against your full salary? Open the salary calculator →

Got a year-end bonus, sign-on, or retention payout? See the bonus calculator →

1099 contract work or side gigs? Self-employment tax adds 15.3% on top. Open the 1099 tax calculator →

Working overtime? The 2025 OBBBA deduction may save you up to $12,500 on federal tax. Open the No Tax on Overtime calculator →

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Civil Engineer Salary Ranges in Idaho

Entry Level (0–3 yrs)

$75,000

/year

See tax breakdown →

Mid Level (3–7 yrs)

$100,000

/year

See tax breakdown →

Senior Level (7+ yrs)

$145,000

/year

See tax breakdown →

Not all Civil Engineers earn the same — not even close

Idaho's civil engineering market is anchored by the Idaho Transportation Department ITD + I-84 + I-15 + I-90 + US-95 + the substantial ID highway expansion programs + the substantial post-2020 ID Treasure Valley growth-driven transportation infrastructure, HDR Boise office (substantial Omaha NE-HQ multi-state engineering firm), Stantec Boise + Idaho Falls offices (Canada-HQ multi-state), WSP USA + Kimley-Horn + Parametrix ID offices, Idaho National Laboratory INL Idaho Falls cleared facility CE (~6K cleared workforce + the substantial INL facility engineering), Micron Technology HQ Boise Fab CE (the substantial post-CHIPS Act $40B+ investment facility construction CE), Idaho Power Boise utility CE (the substantial Snake River hydroelectric + Hells Canyon Complex civil engineering), US Army Corps of Engineers USACE Walla Walla District (Snake River navigation + flood + dam work covering ID portion), plus Boise State + UI + ISU CE pipelines.

Senior Civil Engineer / P.E. (HDR / Stantec)

$118,000–$182,000+ TC

HDR + Stantec + WSP + Kimley-Horn Boise · transportation + water + facility CE · multi-state

Senior Cleared P.E. (INL / Micron)

$125,000–$195,000+ TC

INL Battelle Energy Alliance + Micron post-CHIPS Act $40B+ facility · DOE Q clearance + cleared

Senior Semiconductor Facility CE (Micron)

$125,000–$195,000+ TC

Micron Boise · Fab capex + post-CHIPS Act $40B+ Clay NY + Boise expansion facility CE

Senior Transportation / Highway Engineer (ITD)

$92,000–$142,000

ITD + I-84 + I-15 + I-90 + US-95 + the substantial ID post-2020 growth-driven highway CE

Senior Flood / River Engineer (USACE)

$108,000–$165,000

USACE Walla Walla District · Snake River + the substantial ID portion flood + dam

Senior Hydroelectric Dam Engineer (Idaho Power)

$115,000–$172,000+ TC

Idaho Power · Snake River hydroelectric + Hells Canyon Complex civil + structural · the substantial dam

Senior Structural / Bridge Engineer

$105,000–$162,000

ITD bridge engineering + the substantial ID Snake River bridges + the substantial ID seismic design

Senior Federal P.E. (USACE / INL / Mountain Home)

$108,000–$162,000

USACE + INL + Mountain Home GS-13/14 federal civilian + cleared contractor · DOE Q + TS

Senior Construction Engineer (Treasure Valley)

$108,000–$165,000

the substantial post-2020 ID Treasure Valley growth-driven construction · Boise + Meridian + Eagle

Junior Civil Engineer (0-3 yrs)

$58,000–$80,000

Boise State CE + UI CE + ISU CE pipeline · entry band · EIT/FE candidate

Worth knowing: Idaho Power Snake River hydroelectric + Hells Canyon Complex civil engineering is one of the country's most distinctive concentrated US single-state hydroelectric dam engineering operations and a feature most national CE surveys understate for ID. Idaho Power Snake River hydroelectric (the substantial Idaho Power Hells Canyon Complex three-dam project on Snake River + the substantial Brownlee Dam + Oxbow Dam + Hells Canyon Dam ~1.2 GW combined + the substantial Idaho Power C.J. Strike Dam + Bliss Dam + Lower Salmon Falls Dam + Upper Salmon Falls Dam + Twin Falls Dam + Shoshone Falls Dam + the substantial Idaho Power post-2020 hydroelectric license renewal Hells Canyon Complex + the substantial Idaho Power post-2024 Hells Canyon water quality remediation + the substantial Idaho Power civil engineering supporting substantial dam safety + spillway + powerhouse + transmission + the substantial Idaho Power post-2020 modernization investment) supports substantial ID-specific hydroelectric civil engineering work. Senior Idaho Power hydroelectric CE engineers clear $115-172K+ TC. INL Idaho Falls substantial cleared facility CE (the substantial INL post-2020 NuScale SMR site preparation + the substantial post-2024 Versatile Test Reactor planning + the substantial INL Cybercore Integration Center facility + the substantial INL Advanced Test Reactor ATR facility + the substantial INL post-2024 plutonium pit production qualification facility coordination + DOE Q clearance premium) supports substantial INL cleared civil engineering. Senior cleared INL CEs clear $125-195K+ TC. Micron Technology HQ Boise substantial Fab facility CE supporting the substantial post-CHIPS Act $40B+ Boise expansion + Clay NY $100B+ multi-fab project facility CE + the substantial Micron cleanroom + facility cooling + power distribution + chemical delivery + the substantial Micron post-2024 manufacturing facility expansion CE. The substantial post-2020 ID Treasure Valley growth-driven transportation infrastructure (the substantial post-2020 ID Boise + Meridian + Eagle + Star + Kuna + Nampa population growth + the substantial post-2020 ITD I-84 widening + I-84 Wye + the substantial post-2020 ID highway capacity expansion + the substantial ITD post-2024 fed infrastructure investment + the substantial ID-Boise State Boise State Stadium expansion CE) supports substantial ITD + consulting CE work. The US Army Corps of Engineers Walla Walla District (the substantial USACE Snake River + Salmon River + Clearwater River navigation + flood + dam covering ID portion + the substantial USACE Dworshak Dam + Lower Granite + Little Goose + Lower Monumental + Ice Harbor dams + the substantial USACE post-2020 Snake River salmon recovery) supports substantial cleared federal civilian + contractor civil engineering work. HDR + Stantec + WSP + Kimley-Horn substantial Boise office multi-state engineering services. ID flat 5.695% post-2024 HB 521 reform + ID RTW since 1985 + ID property tax ~0.69% + no state estate tax + lower ID cost of living anchor the ID CE proposition.