PlainZIP

Parkville, MD · standard

ZIP Code 21234

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

69,752
2,074/sq mi
$83,517
Median income
$288,100
Median home value
36.4%
Bachelor's or higher

The verdict

Parkville pairs an above-median household income with above-median home values, in a suburban-density, homeowner-dominated and unusually populous area.

Top 34%
household income, US ZIPs
Top 35%
home value, US ZIPs
2,074
people per sq mi
65%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 21234 against every reporting US ZIP.

ZIP code 21234 is a densely settled ZIP (a standard USPS delivery area) in Parkville, Baltimore County, Maryland, with 69,752 residents across 33.6 square miles, a density of 2,074 people per square mile, in the New York time zone.

ZIP 21234 lands in the middle-income range, with a median household income of $83,517 (27% below the Maryland average), while per-capita income is $44,405. The poverty rate stands at 8.4% and the unemployment rate at 3.9%. The typical home here is valued at $288,100 (36% below the state average); renters pay a median of $1,587 monthly, and 64.5% of units are owner-occupied.

A solid share of residents have a four-year degree: 36.4% of adults hold a bachelor's degree or higher, the median age is 40.5, and the average commute is 27 minutes. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Baltimore County, so you can benchmark 21234 against its immediate geography rather than a national average alone.

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 21234

Top 5 sectors by establishment count in Parkville, MD

Which industries have the most business establishments in ZIP 21234.

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 21234, Parkville, 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

69,752

Population

33.6

Area (sq mi)

2,074

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 21234?

40.5

Median Age

48.6%

Male

51.4%

Female

11.5%

Foreign-Born

White 54.5%
African American 31.9%
Asian 5.7%
American Indian or Alaska Native 0.6%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 5.7%
Hispanic or Latino 5.0%

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?

$83,517

Median Household Income

-27% vs state

$44,405

Per Capita Income

8.4%

Poverty Rate

3.9%

Unemployment Rate

27.4 min

Mean Commute Time

How ZIP 21234 ranks nationally

Parkville, MD household income vs. every US ZIP code

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

$83,517 Top 34% higher than 66% 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%). This entry sits in this band. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $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 62.2%
Bachelor's Degree or Higher 36.4%

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

What does housing look like?

29,649

Total Housing Units

27,639

Occupied Units

2,010

Vacant Units

2.38

Avg Household Size

Occupancy Type

Owner 64.5%
Renter 35.5%

$288,100

Median Home Value

-36% vs state

$1,587

Median Rent

1963

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

+5.8%

YoY Change (2024)

260

HPI Index (2000 = 100)

+160%

Total Change Since 2000

Home values in ZIP 21234 have increased 5.8% over the past year (2024). Since 2000, this ZIP has seen +160% cumulative appreciation.

Year Annual Change HPI Index
2020 +4.7% 191
2021 +9.1% 208
2022 +10.4% 230
2023 +6.8% 245
2024 +5.8% 260

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 991 business establishments in ZIP 21234, employing approximately 10,461 people with a combined annual payroll of $425,615,000.

991

Businesses

10,461

Employees

$425.6M

Annual Payroll

15

Industry Sectors

Industry Establishments % of Total
Retail trade 156 15.7%
Health care and social assistance 147 14.8%
Construction 126 12.7%
Other services (except public administration) 125 12.6%
Accommodation and food services 107 10.8%
Professional, scientific, and technical services 86 8.7%
Administrative and support and waste management and remediation services 59 6.0%
Finance and insurance 48 4.8%
Real estate and rental and leasing 40 4.0%
Manufacturing 18 1.8%
Transportation and warehousing 18 1.8%
Wholesale trade 16 1.6%
Arts, entertainment, and recreation 15 1.5%
Educational services 13 1.3%
Information 12 1.2%

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 21234 vs 21236 →

ZIP 21234 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 21234 ranks the most populous - useful context the national average alone can't give.

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

ZIP 21234 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 21234 ranks #7 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
21236 Nottingham, MD 38,474 2.6 mi
21206 Baltimore, MD 50,846 3.7 mi
21286 Towson, MD 19,206 2.6 mi
21214 Baltimore, MD 20,564 3.3 mi
21252 Towson, MD 2,872 3.9 mi
21239 Baltimore, MD 28,793 3.4 mi
21057 Glen Arm, MD 4,112 4.2 mi
21237 Rosedale, MD 30,059 4.3 mi
21251 Baltimore, MD 934 4.1 mi
21128 Perry Hall, MD 12,802 4.8 mi

More ZIP Codes in Baltimore County

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
21220 standard
Middle River, MD
Pop: 39,199

Related Areas

Baltimore County Parkville, MD Maryland

Frequently Asked Questions

What county is ZIP code 21234 in? ▼
ZIP code 21234 (Parkville) 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 21234? ▼
ZIP code 21234 in Parkville, MD has a population of 69,752 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 21234? ▼
The median household income in ZIP 21234 is $83,517, which is 9% above the national average of $76,288.
What is the average home value in ZIP 21234? ▼
The median home value in ZIP 21234 is $288,100, which is 4% above the national average of $278,155.
What is the demographic makeup of ZIP 21234? ▼
The largest racial group in ZIP 21234 is White at 54.5%. Hispanic or Latino residents make up 5.0% of the population.
How many businesses are in ZIP code 21234? ▼
ZIP code 21234 has 991 business establishments employing approximately 10,461 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 21234? ▼
The top industries by establishment count in ZIP 21234 are: Retail trade (156), Health care and social assistance (147), Construction (126). There are 15 industry sectors represented in total.
How have home values changed in ZIP code 21234? ▼
According to the FHFA House Price Index, home values in ZIP 21234 increased by 5.8% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 160%. 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 21234? ▼
In ZIP code 21234, 62.2% of residents aged 25+ have a high school diploma or higher, and 36.4% 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 21234? ▼
The mean commute time for workers in ZIP code 21234 is 27.4 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 21234? ▼
In ZIP code 21234, approximately 64.5% of occupied housing units are owner-occupied and 35.5% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 21234? ▼
The poverty rate in ZIP code 21234 is 8.4% 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.