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Idaho cost of living & income (2026)

Quick answer: Idaho has a cost-of-living index of 101.7 (100 = national baseline), an illustrative estimated annual cost of living of about $50,850, median household income of $81,166, combined average sales tax about 6.01%, and regular gas about $4.263/gal in the June 2026 AAA snapshot used on the hub.

COL index101.7100 = US baseline
Est. annual COL$50,850
Median HH income$81,166
Sales tax (comb.)6.01%
Gas (87 octane)$4.263/galJune 2026 AAA
Largest cityBoise (235,421)

Taxes & economy

Income tax: Flat 5.3%

Sales tax: 6% state (combined avg. ~6.01%)

Major industries: Agriculture (potatoes, dairy), technology/semiconductors, tourism, manufacturing

Climate snapshot

Summer high ~91°F (July, Boise area) · Winter low ~21°F (January)

Culture (context)

Idaho State Capitol / Basque heritage sites

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FAQ

What is Idaho's cost of living index?

Idaho's cost-of-living index is 101.7 (national baseline 100) in this 2026 classroom snapshot.

What is the estimated annual cost of living in Idaho?

The explorer lists an illustrative estimated annual cost of living of about $50,850 for Idaho.

What is median household income in Idaho?

Median household income in Idaho is $81,166 in this dataset.

What is the combined average sales tax rate in Idaho?

The combined average sales tax rate shown for Idaho is 6.01%. State and local rules vary; see the Tax Foundation citation on the hub.

Does Idaho have a state income tax?

State income tax in Idaho: Flat 5.3%.

What was regular gas in Idaho in this snapshot?

87-octane gas is listed at $4.263 per gallon (AAA, June 2026) in the explorer data.

Sources on the hub: Tax Foundation (sales tax), BEA / ACS (income & COL), AAA gas (June 20, 2026). Educational snapshot — not relocation or tax advice.