Sumner County
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- Population
- 22,353
- Area
- 1,181.67 sq mi (3,060.51 km²), 3.29 sq mi water
- Median age
- 41.3
- Households
- 8,970
- Persons per household
- 2.5
- Median household income
- $63,951
- Median house value
- $135,100
Demographics: 2020–2024 ACS
Today
78°F
Sunny
Tonight
50°F
Clear
Monday
76°F
Sunny
Monday Night
51°F
Clear
Cities & Towns in Sumner County
ArgoniaAvon TownshipBelle PlaineBelle Plaine TownshipBluff TownshipCaldwellCaldwell TownshipChikaskia TownshipConway SpringsConway TownshipCreek TownshipDixon TownshipDowns TownshipEden TownshipFalls TownshipGeuda SpringsGore TownshipGreene TownshipGuelph TownshipHarmon TownshipHunnewellIllinois TownshipJackson TownshipLondon TownshipMayfieldMilanMiltonMorris TownshipMulvaneOsborne TownshipOxfordOxford TownshipPalestine TownshipPeckRyan TownshipSeventy-Six TownshipSouth HavenSouth Haven TownshipSpringdale TownshipSumner TownshipValverde TownshipWalton TownshipWellingtonWellington Township