PlainZIP

Phoenix, MD · standard

ZIP Code 21131

Baltimore County, Maryland - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

7,253
126/sq mi
$197,619
Median income
$686,000
Median home value
73.9%
Bachelor's or higher

The verdict

Phoenix pairs a top-decile household income with top-decile home values, in a rural, homeowner-dominated area.

Top 1%
household income, US ZIPs
Top 7%
home value, US ZIPs
126
people per sq mi
98%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 21131 against every reporting US ZIP.

ZIP code 21131 is a mid-sized community (a standard USPS delivery area) in Phoenix, Baltimore County, Maryland, home to 7,253 residents across 57.6 square miles, a density of 126 people per square mile, in the New York time zone.

ZIP 21131 skews affluent, with a median household income of $197,619 (73% above the Maryland average), while per-capita income is $82,991. Local economic indicators show a 4.7% poverty rate alongside 3.9% unemployment. The typical home here is valued at $686,000 (53% above the state average); renters pay a median of - monthly, and 98.4% of units are owner-occupied.

This is a highly-educated ZIP: 73.9% of adults hold a bachelor's degree or higher, the median age is 49.4, and the average commute is 30 minutes. To put 21131 in local context, 10 ZIP codes within roughly 10 miles appear further down this page alongside 6 additional ZIPs in Baltimore County, for a geography-aware comparison.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 21131

Top 5 sectors by establishment count in Phoenix, MD

Which industries have the most business establishments in ZIP 21131.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 21131, Phoenix, MD · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

7,253

Population

57.6

Area (sq mi)

126

People / sq mi

New York

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 21131?

49.4

Median Age

52.6%

Male

47.4%

Female

6.9%

Foreign-Born

White 92.8%
African American 0.7%
Asian 1.3%
American Indian or Alaska Native 0.1%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 4.1%
Hispanic or Latino 1.5%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$197,619

Median Household Income

+73% vs state

$82,991

Per Capita Income

4.7%

Poverty Rate

3.9%

Unemployment Rate

30.0 min

Mean Commute Time

How ZIP 21131 ranks nationally

Phoenix, MD household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$197,619 Top 1% higher than 99% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Below this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Below this entry. $140,000–$160,000: 686 US ZIPs (2%). Below this entry. $160,000–$180,000: 364 US ZIPs (1%). Below this entry. $180,000–$200,000: 186 US ZIPs (1%). This entry sits in this band. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 86.7%
Bachelor's Degree or Higher 73.9%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

2,658

Total Housing Units

2,600

Occupied Units

58

Vacant Units

2.75

Avg Household Size

Occupancy Type

Owner 98.4%
Renter 1.6%

$686,000

Median Home Value

+53% vs state

1975

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

+7.2%

YoY Change (2024)

208

HPI Index (2000 = 100)

+108%

Total Change Since 2000

Home values in ZIP 21131 have increased 7.2% over the past year (2024). Since 2000, this ZIP has seen +108% cumulative appreciation.

Year Annual Change HPI Index
2020 +1.5% 157
2021 +5.5% 166
2022 +14.0% 189
2023 +2.9% 194
2024 +7.2% 208

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 215 business establishments in ZIP 21131, employing approximately 1,746 people with a combined annual payroll of $83,892,000.

215

Businesses

1,746

Employees

$83.9M

Annual Payroll

13

Industry Sectors

Industry Establishments % of Total
Professional, scientific, and technical services 43 20.0%
Construction 32 14.9%
Finance and insurance 29 13.5%
Health care and social assistance 20 9.3%
Real estate and rental and leasing 18 8.4%
Other services (except public administration) 14 6.5%
Retail trade 13 6.0%
Administrative and support and waste management and remediation services 13 6.0%
Accommodation and food services 9 4.2%
Arts, entertainment, and recreation 7 3.3%
Educational services 6 2.8%
Wholesale trade 4 1.9%
Transportation and warehousing 3 1.4%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 21131 vs 21111 →

ZIP 21131 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 21131 ranks #5 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 21131 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 21131 ranks the highest of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
21111 Monkton, MD 4,903 5.0 mi
21286 Towson, MD 19,206 6.2 mi
21013 Baldwin, MD 4,653 4.7 mi
21031 Hunt Valley, MD 4 4.6 mi
21030 Cockeysville, MD 24,355 5.1 mi
21057 Glen Arm, MD 4,112 5.2 mi
21082 Hydes, MD 654 5.4 mi
21093 Lutherville Timonium, MD 36,465 5.7 mi
21252 Towson, MD 2,872 7.9 mi
21234 Parkville, MD 69,752 8.0 mi

More ZIP Codes in Baltimore County

21234 standard
Parkville, MD
Pop: 69,752
21222 standard
Dundalk, MD
Pop: 55,786
21117 standard
Owings Mills, MD
Pop: 53,778
21207 standard
Gwynn Oak, MD
Pop: 48,133
21228 standard
Catonsville, MD
Pop: 47,577
21221 standard
Essex, MD
Pop: 42,154

Related Areas

Baltimore County Phoenix, MD Maryland

Frequently Asked Questions

What county is ZIP code 21131 in? ▼
ZIP code 21131 (Phoenix) is located in Baltimore County, Maryland. Baltimore County contains multiple ZIP codes, see the full list at /counties/baltimore-md-24005.
What is the population of ZIP code 21131? ▼
ZIP code 21131 in Phoenix, MD has a population of 7,253 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 21131? ▼
The median household income in ZIP 21131 is $197,619, which is 159% above the national average of $76,288.
What is the average home value in ZIP 21131? ▼
The median home value in ZIP 21131 is $686,000, which is 147% above the national average of $278,155.
What is the demographic makeup of ZIP 21131? ▼
The largest racial group in ZIP 21131 is White at 92.8%. Hispanic or Latino residents make up 1.5% of the population.
How many businesses are in ZIP code 21131? ▼
ZIP code 21131 has 215 business establishments employing approximately 1,746 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 21131? ▼
The top industries by establishment count in ZIP 21131 are: Professional, scientific, and technical services (43), Construction (32), Finance and insurance (29). There are 13 industry sectors represented in total.
How have home values changed in ZIP code 21131? ▼
According to the FHFA House Price Index, home values in ZIP 21131 increased by 7.2% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 108%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 21131? ▼
In ZIP code 21131, 86.7% of residents aged 25+ have a high school diploma or higher, and 73.9% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 21131? ▼
The mean commute time for workers in ZIP code 21131 is 30.0 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 21131? ▼
In ZIP code 21131, approximately 98.4% of occupied housing units are owner-occupied and 1.6% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 21131? ▼
The poverty rate in ZIP code 21131 is 4.7% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.