Jefferson County, ID

Comprehensive housing, income, and cost of living data for Jefferson County, Idaho. Population: 31.4K.

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Median Home Price

$391.8K

Based on 5 cities

Median Household Income

$83.0K

Annual household income

Price-to-Income Ratio

4.7x

Moderately affordable

Salary Needed to Buy

$98.2K

30-yr mortgage, 6.5% rate, 20% down

Housing & Finance

Annual Property Tax

$1,775

Average annual amount

Effective Tax Rate

0.45%

Property tax / home value

Monthly Housing Costs

Mortgage (P&I)$1,981

Property Tax$148

Insurance$163

Total Monthly$2,292

Historical Home Prices

2015

$177.8K

2016

$194.6K

+9.5%%

2017

$211.4K

+8.6%%

2018

$235.2K

+11.3%%

2019

$262.3K

+11.5%%

2020

$315.0K

+20.1%%

2021

$412.8K

+31.0%%

2022

$431.6K

+4.6%%

2023

$421.0K

-2.5%%

2024

$437.0K

+3.8%%

2025

$449.0K

+2.7%%

Source: County price history data via Zillow ZHVI

Demographics & Economics

Unemployment Rate

2.3%%

Below national average

Population Density

People per square mile

Homicide Rate

14.6

Medium (per 100K residents)

Political Lean (2020)

Competitive

R+1

Racial Demographics

White

86.1%

Black

0.1%

Hispanic

10.8%

Asian

0.1%

Two or More Races

2.2%

Source: Census ACS 2023. Hispanic/Latino ethnicity counted separately from race.

Climate & Environment

Average Temperature

44°F

Annual average

Sunny Days

174

Days per year

Annual Rainfall

9.8"

Inches per year

Natural Disaster Risk

Moderate Risk

Score: 40/100

January Low

41°F

Average winter low

July High

92°F

Average summer high

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