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21131
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  3. ZIP Code 21131
Maryland (MD)Baltimore CountyBaltimore-Columbia-Towson410443667

ZIP Code 21131 — Phoenix, MD

Baltimore County * Baltimore-Columbia-Towson metro

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7.1K

Population

$197.6K

Median income

per household

$686K

Home value

4.7%

Poverty rate

What stands out

  • Median household income: $197.6K (top 10% vs US ZIP codes).
  • Median home value: $686K (top 10% vs US ZIP codes).
  • Poverty rate: 4.7% (low poverty; bottom quartile vs US ZIP codes).

Categories vs U.S.

Economy

4 of 4 metrics better than U.S. benchmarks

Rental strain: 100.0% of renter households are rent-burdened (≥30% of income).

Median household income

$197.6K

U.S.

$81K

Per-capita income

$83K

U.S.

$45K

Median home value

$686K

U.S.

$333K

Housing stress

Rent-burdened renters (≥30%)

100.0%

U.S.

51.1%

Severely rent-burdened (≥50%)

100.0%

U.S.

25.9%

Affordability Ratios

Home-Value-to-Income

3.5×

Within typical 3-5x range

Income distribution

Share of households by income bracket (ACS).

Income distribution
Income bracketShare of households
< $50k12.6%
$50–100k11.5%
$100–200k26.6%
$200k+49.2%
< $50k
12.6%
$50–100k
11.5%
$100–200k
26.6%
$200k+
49.2%

Housing tenure

Owner-occupied vs renter-occupied housing (ACS).

Housing tenure
TenurePercent
Owners98.4%
Renters1.6%
98.4%
Owners
Owners
98.4%
Renters
1.6%

Health

6 of 6 available metrics better than U.S.

CDC PLACES modeled ZCTA-level estimates (adult prevalence).

Obesity

28.5%

U.S.

33.3%

Diabetes

10.3%

U.S.

12.0%

Current smoking

7.4%

U.S.

13.1%

Connectivity

3 of 3 metrics better than U.S.

100+ Mbps coverage

99.4%

U.S.

89.6%

Gigabit ready

91.4%

U.S.

46.1%

5G available

96.0%

U.S.

77.4%

Learning

Education metrics come from ACS 5-year estimates for ZIP Code Tabulation Areas (ZCTAs).

Bachelor's degree+ (age 25+)

73.9%

U.S.

35.7%

A high share of adults with a bachelor's degree or higher often correlates with higher-paying jobs and knowledge-economy industries.

ZIP-level estimates can have higher margins of error than county/state totals; treat small differences as noise.

School districts

Baltimore County Public Schools

Map

ZIP 21131

Phoenix, MD

Population

7.1K

Area

21.0 sq mi

Density

339.5/sq mi

Neighbors

21013210302105721093211112115221286

National Percentile Rankings

How this ZIP compares to other ZIP codes nationwide.

More Details

Census Tracts

5 tracts overlap this ZIP. Hover over segments to explore.

54%
40%

Tract 4101

53.7%

Tract 4102

39.5%

Tract 4089

2.5%

Tract 4112.02

2.3%

Tract 4081

1.9%

Total tracts: 5Coverage: 99.9%

Congressional District Overlap

District Coverage

ZIP codes can span multiple congressional districts. Overlap percentages are approximate by land area and should be treated as geographic coverage, not address-level assignment.

57%
43%

MD-1

57.3%

MD-2

42.7%

Districts: 2Coverage: 100.0%

Data freshness

ACS 5-Year
2020–2024
CDC PLACES
2025
Broadband
2024-06-arcgis
Mobile
2025-11-24
Page Updated
2026-04-26

Release schedule and upstream dates: Sources.

Data sources

US Census Bureau (ACS 5-year)HUD USPS ZIP crosswalkUS Census TIGER/Line (geometry inputs)US Census TIGER/Line (school districts)US Census Bureau (ZCTA-to-tract relationship, 2020)US Census Bureau (2020 ZCTA-to-congressional-district relationship file, CD119)CDC PLACES (ZCTA)FCC Broadband Data Collection (fixed broadband)FCC (Mobile Broadband Data Collection)

Derived statistics

  • ZIP pages use Census ZIP Code Tabulation Areas (ZCTAs), not USPS delivery routes.
  • Population density is computed as population ÷ land area.
  • Overlap percentages (tracts and districts) are derived from map geometry and are approximate.

Data accuracy & methodology

ZIP pages combine 2020–2024 ACS 5-year ZCTA estimates with other public datasets when available (see Sources). Connectivity metrics use FCC coverage data, not ACS. ZIP-level estimates can have higher margins of error than county/state totals; treat small differences as statistical noise rather than precise changes.

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