Franklin County, Idaho Demographics 2026

Name: Franklin County, Idaho Demographics
Creator: U.S. Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Franklin County, Idaho has a population of 15,056, the 22nd most populous county in Idaho. The median household income is $71,950 and the median home value is $372,600. The poverty rate is 7.9%.

Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes

Franklin County Quick Facts

Population 15,056

Median Household Income $71,950

Median Home Value $372,600

Poverty Rate 7.9%

Unemployment Rate 2.4%

Median Age 33.3 years

Homeownership Rate 78.1%

Affordability Ratio 5.2x

Bachelor's Degree+ 23.9%

High School Graduation 95.7%

Cities/Places 6

Population 15,056 22nd of 44

Median Income $71,950 8% lower than state

Poverty Rate 7.9%

Unemployment 2.4%

How Franklin County Changed

Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.

Metric	2019–2023	2020–2024	Change
Population	14,715	15,056	+2.3%
Median household income	$65,991	$71,950	+9.0%
Median home value	$304,000	$372,600	+22.6%

Median Household Income

Franklin

$71,950

$77,800

National

$80,734

Median Home Value

Franklin

$372,600

$418,600

National

$332,700

Economy & Housing

Household Income Distribution

Under $25K 12.4%

$25K-$50K 15.0%

$50K-$100K 36.3%

$100K+ 36.3%

Detailed income brackets

Under $10K

4.0%

$10K-$15K

2.4%

$15K-$20K

5.3%

$20K-$25K

0.7%

$25K-$30K

1.9%

$30K-$35K

1.7%

$35K-$40K

1.4%

$40K-$45K

4.5%

$45K-$50K

5.5%

$50K-$60K

12.3%

$60K-$75K

11.1%

$75K-$100K

12.9%

$100K-$125K

9.9%

$125K-$150K

9.1%

$150K-$200K

9.3%

$200K+

8.0%

Employment

2.4% Unemployment Rate State: 3.7%|National: 5.2%

64.7% Labor Force Participation

Housing Overview

Owner 78.1%

Renter 21.9%

Affordability Index Expensive

5.2x home value to income ratio

Median gross rent $894/mo 14.9% of median household income annually

People & Demographics

Age Distribution

Under 18

30.5%

18-34

20.8%

35-54

23.5%

55-74

19.1%

75+

6.1%

Race & Ethnicity

Diversity Index

Very Low Diversity

A less diverse community where one racial or ethnic group represents a large majority.

State average: 36 | National average: 61

Education

Educational Attainment (Adults 25+)

Cities & Places in Franklin County

City	Population	Median Income	Poverty	Home Value
Preston	5,928	$61,039	11.0%	$350,300
Franklin	1,034	$81,830	3.6%	$370,200
Clifton	788	$89,583	2.4%	$339,400
Weston	569	$88,462	2.3%	$344,300
Dayton	500	$82,083	2.8%	$308,300
Oxford	49	$74,583	6.1%	$275,000

Explore Idaho Rankings

Cities by Population All cities ranked by size Richest Cities Ranked by median income Most Educated By bachelor's degree rate Most Affordable By housing affordability

Population Overview

Franklin County is located in Idaho with a total population of 15,056. It is the 22nd most populous county out of 44 in Idaho. The county encompasses 6 Census-designated places.

Age Demographics

The median age in Franklin County is 33.3 years. This is 11% lower than the state median of 37.3 years. With 30.5% of the population under 18, Franklin County has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in Franklin County is $71,950. This is 8% lower than the state median of $77,800. It is also 11% lower than the national median of $80,734. The poverty rate stands at 7.9%. This is 26% lower than the state poverty rate of 10.6%. The unemployment rate is 2.4%. This is 36% lower than the state rate of 3.7%. The median home value is $372,600. Housing costs are 11% lower than the state median of $418,600. The home-value-to-income ratio is 5.2x. 78.1% of occupied housing units are owner-occupied. This homeownership rate is 8% higher than the state average of 72.1%.

Race & Ethnicity

Franklin County has a predominantly White (non-Hispanic) population, comprising 89.4% of all residents. Hispanic or Latino residents account for 7.4%. The Black or African American population (0.1%) is well below the state average of 0.7%. The Asian population (0.1%) is well below the state average of 1.3%.

Education

23.9% of residents aged 25 and older hold a bachelor's degree or higher. This is 25% lower than the state rate of 31.8%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 95.7%.

Data Sources & Methodology

All figures for Franklin County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Idaho and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.

Frequently Asked Questions

What is the population of Franklin County, Idaho?

Franklin County has a population of 15,056, making it the 22nd most populous county in Idaho.

What is the median income in Franklin County?

The median household income in Franklin County is $71,950 with a poverty rate of 7.9%.

How many cities are in Franklin County, Idaho?

Franklin County contains 6 Census-designated places.