Iowa

Franklin County

9,977 residents9 permits TTM$63,648 median HHI11 ZIP codesUpdated April 28, 2026
Investor first look

Median home value

$118,500

ACS 5-Year

Cap rate proxy

6.6%

FMR × 0.65 ÷ Home Value

Rent-to-income

12.2%

HUD FMR ÷ ACS HHI

Net migration

+0.93%

IRS SOI

Permits (TTM)

9

Census BPS

Climate risk

21.9

FEMA NRI (0–100)

ZIP code breakdown11 ZIP codes

Numbers repeat across most ZIPs in this county

ZIP-level home-value data isn't published for rural areas. Federal sources (Census ACS, HUD non-metro FMR) are available at the county level only, so home-value, cap-rate, and rent-gap numbers use the county estimate for every ZIP in the county.

ZIPMedian home valueRent (FMR 2BR)Gross yieldCap rateRent gap
50041$118,500county est.$9199.3%6.6%29.4%
50227$118,500county est.$9199.3%6.6%29.4%
50420$118,500county est.$9199.3%6.6%29.4%
50427$118,500county est.$9199.3%6.6%29.4%
50431$118,500county est.$9199.3%6.6%29.4%

Ranked by composite score

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Demographics

Owner-occupied

72.5%

Census ACS

Vacancy rate

12.3%

Census ACS

Bachelor's degree +

18.2%

Census ACS

Rent burdened

28.1%

Census ACS (>30% income)

Median age

41.9

Census ACS

Data sources
U.S. Census Bureau — American Community Survey 5-Year Estimates
U.S. Census Bureau — Building Permits Survey
U.S. Department of Housing and Urban Development — Fair Market Rents / Small Area Fair Market Rents (SAFMR)
Internal Revenue Service — Statistics of Income Migration Data
FEMA — National Risk Index
Last updated: April 28, 2026