Portland-South Portland, ME · Maine

Cumberland County

305,940 residents1,571 permits TTM$92,983 median HHI38 ZIP codesUpdated April 28, 2026
Investor first look

Median home value

$411,400

ACS 5-Year

Cap rate proxy

4.4%

FMR × 0.65 ÷ Home Value

Rent-to-income

19.3%

HUD FMR ÷ ACS HHI

Net migration

+2.30%

IRS SOI

Permits (TTM)

1,571

Census BPS

Climate risk

77.0

FEMA NRI (0–100)

ZIP code breakdown38 ZIP codes
ZIPMedian home valueRent (FMR 2BR)Gross yieldCap rateRent gap
040294.4%29.9%
040404.4%29.9%
040094.4%29.9%
040194.4%29.9%
040244.4%29.9%

Ranked by composite score

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Demographics

Owner-occupied

70.4%

Census ACS

Vacancy rate

14.2%

Census ACS

Bachelor's degree +

52.2%

Census ACS

Rent burdened

44.6%

Census ACS (>30% income)

Median age

42.1

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 28, 2026