Baltimore-Columbia-Towson, MD · Maryland
Carroll County
ZIP 21757
174,318 residents170 permits TTM$115,876 median HHI9 ZIP codesUpdated April 16, 2026
Investor first look
Median home value
$406,400
ACS 5-Year
Cap rate proxy
4.0%
FMR × 0.65 ÷ Home Value
Rent-to-income
14.2%
HUD FMR ÷ ACS HHI
Net migration
+1.91%
IRS SOI
Permits (TTM)
170
Census BPS
Climate risk
59.5
FEMA NRI (0–100)
ZIP 21757
Median home value
$406,400
Gross yield
4.4%
Buy Box score
0.4
Section 8 gap
8.0%
Affordability
P/I: 3.8R/I: —
Section 8 detail
SAFMR: $1,480Rent: $1,370Gap: 8.0%
ZIP code breakdown9 ZIP codes
| ZIP | Median home value | Rent (FMR 2BR) | Gross yield | Buy Box score ↓ | Section 8 gap |
|---|---|---|---|---|---|
| 21074 | — | — | — | 0.7 | — |
| 21102 | — | — | — | 0.6 | — |
| 21048 | — | — | — | 0.4 | — |
| 21757 | $406,400 | $1,480 | 4.4% | 0.4 | 8.0% |
| 21776 | $406,400 | $1,540 | 4.5% | 0.4 | 12.4% |
| 21158 | — | — | — | 0.4 | — |
| 21157 | — | — | — | 0.3 | — |
| 21787 | $406,400 | $1,170 | 3.5% | 0.3 | -14.6% |
| 21784 | — | — | — | 0.2 | — |
Sort by any column. Click a ZIP for detail.
Demographics
Owner-occupied
83.9%
Census ACS
Vacancy rate
4.1%
Census ACS
Bachelor's degree +
39.7%
Census ACS
Rent burdened
44.5%
Census ACS (>30% income)
Median age
41.3
Census ACS
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