Iowa

Lyon County

ZIP 51240

12,087 residents44 permits TTM$72,881 median HHI8 ZIP codesUpdated April 16, 2026
Investor first look

Median home value

$215,600

ACS 5-Year

Cap rate proxy

4.5%

FMR × 0.65 ÷ Home Value

Rent-to-income

13.2%

HUD FMR ÷ ACS HHI

Net migration

+0.72%

IRS SOI

Permits (TTM)

44

Census BPS

Climate risk

19.2

FEMA NRI (0–100)

ZIP 51240

Median home value

$278,275

Gross yield

4.0%

Cap rate

3.5%

Rent gap

12.7%

Affordability

P/I: 3.8R/I:

Section 8 detail

SAFMR: $919Rent: $802Gap: 14.6%
ZIP code breakdown8 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
51230$215,600county est.$9195.1%4.5%12.7%
51235$215,600county est.$9195.1%4.5%12.7%
51237$180,167$9196.1%5.3%12.7%
51240$278,275$9194.0%3.5%12.7%
51241$318,690$9193.5%3.0%12.7%

Ranked by composite score

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Demographics

Owner-occupied

83.3%

Census ACS

Vacancy rate

8.5%

Census ACS

Bachelor's degree +

20.8%

Census ACS

Rent burdened

23.2%

Census ACS (>30% income)

Median age

38.1

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 16, 2026