Mechanical Engineers Salary in Idaho

Mechanical engineers in Idaho earn the most in Idaho Falls (average $101,710 a year) and the least in Twin Falls ($90,740), across the 5 Idaho metro areas we cover. Statewide, BLS puts the mechanical engineers average at $98,430 and the median at $93,190 for 1,070 workers. The U.S. average for this job is $113,610.

Mechanical Engineers average salary by city in Idaho

Idaho Falls$101,710
Coeur d'Alene$98,660
Boise$94,900
Lewiston$94,010
Twin Falls$90,740

Pay, take-home pay and cost of living

City	Average	Median	25th pct.	Take-home*	Cost of living
Idaho Falls	$101,710	$97,540	$82,310	$76,101	94
Coeur d'Alene	$98,660	$87,690	$75,000	$74,117	98
Boise	$94,900	$91,340	$75,860	$71,671	98
Lewiston	$94,010	$95,580	$79,730	$71,092	91
Twin Falls	$90,740	$93,190	$79,680	$68,965	92

*Average salary after federal and state taxes for a single filer; Idaho's zero bracket uses the latest published amount ($4,811, 2025). Cost of living: BEA price parity, U.S. = 100.

Mechanical Engineers salary in other states

Mechanical Engineers salary by city and state

More about pay in Idaho

Sources and how to read this page

Wages: U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics (OEWS), May 2025 estimates for metropolitan areas. SOC code 17-2141.
U.S. and statewide figures: BLS OEWS national and state estimates, May 2025, every employer including rural areas.
Cost of living: Bureau of Economic Analysis regional price parities (RPP), 2024; 100 = U.S. average.

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