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Franklin County, MO: population growth, jobs and income

Franklin County gained 703 residents between 2024 and 2025 (+0.7%).

Franklin County had an estimated 108,090 residents in 2025, up 3.1% (3,238 more people) since 2020. That is faster than Missouri as a whole (+1.9%), and the 36th fastest growth of 115 counties in Missouri.

Data as of 2025 · updated

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In the Franklin County report

One-time $99 PDF: everything on this page for Franklin County, ranked against Missouri and the U.S., plus these figures that are not on the free page:

  • Median gross rent$893/mo2020–24
  • Vacant homes, incl. seasonal and second homes7.1%2020–24
  • New homes permitted, last 12 months8232025-10/2026-09
  • Rent growth, 5 yearsIn the report
  • Permits in 5+ unit buildingsIn the report
  • IRS income moving in (net AGI)In the report
  • Neighbouring-county comparison tableIn the report

What's inside: 5 pages

  1. 1 Summary, headline numbers and ranks (free preview)
  2. 2 Ranks and the neighbouring-county table
  3. 3 Migration, with IRS mover and income flows
  4. 4 Rent, vacant homes, permits and employers
  5. 5 Every source and the methods
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Headline numbers

What the numbers say

Net domestic migration added 717 people in 2025: more people moved in from other U.S. counties than moved out.

Private employers had 35,466 paid employees in mid-March 2023, −2.3% since 2018 (County Business Patterns).

Unemployment averaged 3.7% in 2025, 0.5 points higher than in 2019 (before the pandemic).

Builders were authorized to start 794 new homes in 2025, or 7.3 per 1,000 residents.

Median household income was $73,165 in the 2020–24 American Community Survey, +21.7% since 2016–20.

Across the 3,107 U.S. counties with a comparable estimate, its population growth ranks 961st.

Part of the St. Louis, MO-IL metro area.

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Franklin County population by year

Resident population, July 1 estimate (Census Bureau)
YearPopulationChange
2025108,090+703
2024107,387+947
2023106,440+586
2022105,854+539
2021105,315+463
2020104,852–

Census Bureau population estimates, July 1 of each year.

What drove the change in Franklin County

Franklin County grew by 3,238 people since 2020; the largest part came from domestic migration (+3,776).

Components of population change, people (Census Bureau)
Component20252020–25Share
Natural changebirths minus deaths−42−745
International migrationfrom and to other countries+23+174
Domestic migrationfrom and to other U.S. counties+717+3,776
Census adjustmentbalancing residual+5+33
Total change+703+3,238

Census Bureau population estimates, components of change, each year July 1 to June 30. The components add up to the change in the estimate; the Census adjustment is the small balancing figure the Bureau publishes.

How it ranks

MeasureIn MissouriAmong U.S. counties
Population growth36th of 115961st of 3,107
Net domestic migration per 1,000 residents44th of 115870th of 3,108
Private-sector job growth72nd of 1152,181st of 3,092
Median household income16th of 115951st of 3,107
Lowest unemployment rate25th of 1151,183rd of 3,108
New homes permitted per 1,000 residents4th of 113307th of 3,005

1st = highest (lowest for unemployment). Counties are ranked only against others with a figure for the same period.

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The County Growth and Demographics Report for Franklin County, MO as a PDF, from federal data: population and migration, housing and rents, permits, private employers and jobs, unemployment, ranks in the state and the country, and neighbouring counties, with a source next to every number. Pay once, no subscription.

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Neighbouring counties

Over 2020–25, Franklin County's population change (+3.1%) was ahead of 5 of its 7 neighbouring counties and behind 2 (Warren County and St. Charles County).

4 of its 7 neighbouring counties had a higher median household income than Franklin County's $73,165 (2020–24).

Franklin County, MO and its 7 neighbouring counties: public federal figures
CountyPopulation2025Population change2020–25Net domestic migration per 1,000 residents2025Homes permitted per 1,000 residents2025Median household income2020–24
Franklin County, MO This county108,090+3.1%6.67.3$73,165
Warren County, MO39,016+9.2%12.19.2$81,209
St. Charles County, MO426,499+4.9%5.63.9$104,692
Gasconade County, MO14,784+0.1%9.11.6$64,232
Washington County, MO23,810+1.6%12.10.0$56,043
Jefferson County, MO233,132+2.7%4.32.6$82,851
St. Louis County, MO990,911−1.2%−3.41.0$82,936
Crawford County, MO22,929−0.4%7.50.7$57,629

Census Bureau population estimates and building permits, American Community Survey 5-year income. Rates per 1,000 residents. – means no figure, or a base too small for a change or rate (it would swing on a few people). A figure from another period shows its year and is left out of the comparison.

All 115 Missouri counties · Every state

Questions

Is Franklin County growing?

Yes. Its population grew 3.1% between 2020 and 2025, about 3,238 more people (Census Bureau population estimates). Missouri as a whole changed +1.9% over the same years. That ranks 36th of 115 counties in Missouri for population growth.

How many people moved to Franklin County?

On net, about 717 people in 2025: that many more moved in from other U.S. counties than moved out (Census Bureau net domestic migration estimate).

What is the unemployment rate in Franklin County?

It averaged 3.7% in 2025 (BLS Local Area Unemployment Statistics, annual average).

What is the population of Franklin County?

About 108,090 people, according to the U.S. Census Bureau's population estimate for July 1, 2025.

How many jobs are in Franklin County?

Private employers there had 35,466 paid employees in mid-March 2023, −2.3% since 2018 (Census Bureau County Business Patterns; government jobs and the self-employed are not counted).

What Beacon CRE covers in Missouri

Map, parcel and listing layers cover North and South Carolina only for now. This page and the other Missouri county pages carry the public federal growth figures.

Franklin County data alerts

Email me when Franklin County gets new Census numbers: population, building permits, jobs and income. About 4 emails a year, one click to stop.

We use your address only to email you when new data for Franklin County is out: what changed, with a link to that county's report. No newsletter, no other sales emails. Delete it any time with the link in every email. We'll email you a link to confirm first; nothing starts until you click it. Privacy notice.

Sources and method

Each number shows its own period. Changes compare the latest period with five years earlier (or the earliest period available). Beacon CRE last refreshed these figures on 2026-11-05. Figures come from public federal statistics and are informational only, not investment advice. Check the source before relying on a number. Methodology: how we compute every number. More on every layer: data sources and licences.

Jobs outside North and South Carolina use County Business Patterns (paid private-sector employees in mid-March); wages and government jobs are not included.