Foster County
- Population
- 3,358
- Area
- 0.63 sq mi (1.64 km²), 0.01 sq mi water
- Median age
- 43.4
- Households
- 1,531
- Persons per household
- 2.1
- Median household income
- $87,831
- Median house value
- $167,500
Demographics: 2020–2024 ACS
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