Franklin County, Washington Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 14th-largest in Washington
The population of Franklin County, Washington is 97,676 as of the 2023 American Community Survey, making it the 14th-largest county in Washington. The median household income is $82,755, the median home value is $345,700, and the median age is 30.8.
The population of Franklin County has grown 28.0% since 2010 (79,076 → 101,238), a +1.78% annualized rate.
97,676
Population
+1.78%
Annual growth
79
People / sq mi
$82,755
Median Income
$345,700
Median Home Value
Franklin County covers 1,242 sq mi of land at 78.7 people per square mile.
About Franklin County, WA
Age is the most distinctive thing about Franklin County: a median age of 30.8, younger than the national median. With 97,676 residents, Franklin County is a county in Washington. It ranks #14 among counties in Washington by population.
The typical household earns $82,755 a year, above the US median of $78,538. The poverty rate is 10.2%, below the national 12.4%. A typical home is worth $345,700, with typical rent around $1,171.
Degree attainment is mid-range for US counties: 20.4% of adults hold a four-year degree, below the national 35.0%. Around 7.2% of workers work from home, below the national 14.0%, and the average commute runs about 22 minutes each way.
Franklin County Population History (2010-2024)
The county of Franklin County had a population of 79,076 in 2010 and 101,238 in 2024, a 28.0% growth over 14 years. The peak was 101,238 in 2024. Average annual growth rate: 1.79%.
101,238
Population (2024)
79,076
Population (2010)
101,238
Peak (2024)
1.79%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 79,076 |
| 2011 | 83,048 |
| 2012 | 85,691 |
| 2013 | 86,441 |
| 2014 | 87,640 |
| 2015 | 88,681 |
| 2016 | 90,132 |
| 2017 | 91,803 |
| 2018 | 93,950 |
| 2019 | 95,446 |
| 2020 | 97,152 |
| 2021 | 98,107 |
| 2022 | 98,461 |
| 2023 | 99,554 |
| 2024 | 101,238 |
Race & Ethnicity
| White | 51.8% |
| Black or African American | 1.9% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 3.2% |
| Two or More Races | 0.1% |
Age & Sex
30.8
Median Age
48.5%
Female
51.5%
Male
10.0%
Age 65+
Age Distribution
Children (under 15): 26.2% · Seniors (65+): 10.0%
Income & Poverty
| Median household income | $82,755$-12,197 vs state |
| Mean household income | $105,287 |
| Per-capita income | $32,752 |
| Poverty rate | 10.2%+3.8% vs state |
| Unemployment rate | 3.5% |
| Employment-to-population | 62.5% |
Top Industries by Employment
The largest employment sector in Franklin County is professional & business services, accounting for 20.0% of workers.
How residents commute
0.3%
Drive alone
1.1%
Carpool
76.4%
Public transit
7.2%
Work from home
22.2 min
Avg commute
Housing
$345,700$-174,100 vs state
Median home value
$1,171
Median rent
70.1%
Homeownership rate
30,488
Total housing units
95.5%
Occupied
4.5%
Vacant
29.9%
Renter-occupied
Social & access
86.8%
With health insurance
96.3%
With broadband internet
24.2%
Foreign-born
6.3%
Veterans (18+)
11.4%
With a disability
49.9%
Speak language other than English at home
Education
76.6%
High School+
20.4%
Bachelor's+
Largest cities in Washington
Other counties in Washington
Part of Washington
Metro areas in Washington
County rankings
Frequently Asked Questions
Franklin County, Washington has a population of 97,676 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 14th-largest county in Washington. Population density is 79 people per square mile.
The population of Franklin County has grown 28.0% since 2010 (79,076 → 101,238), a +1.78% annualized rate.
The median household income in Franklin County, Washington is $82,755, with mean (average) household income of $105,287 and per-capita income of $32,752. 10.2% of residents live below the federal poverty level.
In Franklin County, the largest racial and ethnic groups are White (51.8%), Hispanic or Latino (3.2%), Black or African American (1.9%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Franklin County, Washington is 30.8 years. Residents are 48.5% female and 51.5% male.
The median home value in Franklin County is $345,700 and median monthly rent is $1,171. 70.1% of occupied housing units are owner-occupied. The county has 30,488 total housing units, 4.5% of which are vacant.
The largest employment sector in Franklin County, Washington is professional, scientific, and management services, employing 20.0% of workers. The unemployment rate is 3.5%.
Seattle is among the largest cities associated with Franklin County, Washington, with a population of 741,440.
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Full rankings of Washington counties
Statewide data for Washington
Population, race, income, age, and trends across Washington
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.