PlainZIP

Monkton, MD · standard

ZIP Code 21111

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

4,903
54/sq mi
$136,304
Median income
$607,200
Median home value
63.7%
Bachelor's or higher

The verdict

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

Top 6%
household income, US ZIPs
Top 9%
home value, US ZIPs
54
people per sq mi
96%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 21111 against every reporting US ZIP.

ZIP code 21111 covers 90.8 square miles in Monkton, Baltimore County, Maryland (a standard USPS delivery area), with a modest 4,903 residents on file, a density of 54 people per square mile, in the New York time zone.

ZIP 21111 skews affluent, with a median household income of $136,304 (19% above the Maryland average), while per-capita income is $69,759. 6.3% of residents live below the poverty line, and the unemployment rate reads 8.6%. Housing costs here run $607,200 for a typical home value (36% above the state average), with rent averaging $1,359 a month; 95.5% of homes are owner-occupied.

This is a highly-educated ZIP: 63.7% of adults hold a bachelor's degree or higher, the median age is 48.7, and the average commute is 32 minutes. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Baltimore County, so you can benchmark 21111 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 21111

Top 5 sectors by establishment count in Monkton, MD

Which industries have the most business establishments in ZIP 21111.

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 21111, Monkton, 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

4,903

Population

90.8

Area (sq mi)

54

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 21111?

48.7

Median Age

52.3%

Male

47.7%

Female

2.4%

Foreign-Born

White 91.7%
African American 2.8%
Asian 0.5%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 4.5%
Hispanic or Latino 2.2%

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?

$136,304

Median Household Income

+19% vs state

$69,759

Per Capita Income

6.3%

Poverty Rate

8.6%

Unemployment Rate

31.9 min

Mean Commute Time

How ZIP 21111 ranks nationally

Monkton, MD household income vs. every US ZIP code

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

$136,304 Top 6% higher than 94% 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%). This entry sits in this band. $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 74.8%
Bachelor's Degree or Higher 63.7%

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

What does housing look like?

1,939

Total Housing Units

1,908

Occupied Units

31

Vacant Units

2.47

Avg Household Size

Occupancy Type

Owner 95.5%
Renter 4.5%

$607,200

Median Home Value

+36% vs state

$1,359

Median Rent

1979

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

+6.1%

YoY Change (2024)

202

HPI Index (2000 = 100)

+102%

Total Change Since 2000

Home values in ZIP 21111 have increased 6.1% over the past year (2024). Since 2000, this ZIP has seen +102% cumulative appreciation.

Year Annual Change HPI Index
2020 +1.6% 157
2021 +5.4% 165
2022 +15.2% 190
2023 +0.3% 191
2024 +6.1% 202

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 119 business establishments in ZIP 21111, employing approximately 865 people with a combined annual payroll of $40,964,000.

119

Businesses

865

Employees

$41.0M

Annual Payroll

12

Industry Sectors

Industry Establishments % of Total
Construction 25 21.0%
Professional, scientific, and technical services 17 14.3%
Retail trade 12 10.1%
Real estate and rental and leasing 11 9.2%
Health care and social assistance 9 7.6%
Administrative and support and waste management and remediation services 8 6.7%
Other services (except public administration) 8 6.7%
Wholesale trade 6 5.0%
Arts, entertainment, and recreation 6 5.0%
Finance and insurance 5 4.2%
Accommodation and food services 5 4.2%
Transportation and warehousing 3 2.5%

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 21111 vs 21131 →

ZIP 21111 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 21111 ranks #9 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 21111 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 21111 ranks #5 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
21131 Phoenix, MD 7,253 5.0 mi
21161 White Hall, MD 5,490 5.8 mi
21152 Sparks Glencoe, MD 5,544 5.7 mi
21084 Jarrettsville, MD 7,652 6.8 mi
21013 Baldwin, MD 4,653 6.9 mi
21120 Parkton, MD 6,967 7.0 mi
21031 Hunt Valley, MD 4 7.4 mi
21030 Cockeysville, MD 24,355 7.5 mi
21047 Fallston, MD 11,873 8.3 mi
21093 Lutherville Timonium, MD 36,465 10.0 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 Monkton, MD Maryland

Frequently Asked Questions

What county is ZIP code 21111 in? ▼
ZIP code 21111 (Monkton) 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 21111? ▼
ZIP code 21111 in Monkton, MD has a population of 4,903 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 21111? ▼
The median household income in ZIP 21111 is $136,304, which is 79% above the national average of $76,288.
What is the average home value in ZIP 21111? ▼
The median home value in ZIP 21111 is $607,200, which is 118% above the national average of $278,155.
What is the demographic makeup of ZIP 21111? ▼
The largest racial group in ZIP 21111 is White at 91.7%. Hispanic or Latino residents make up 2.2% of the population.
How many businesses are in ZIP code 21111? ▼
ZIP code 21111 has 119 business establishments employing approximately 865 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 21111? ▼
The top industries by establishment count in ZIP 21111 are: Construction (25), Professional, scientific, and technical services (17), Retail trade (12). There are 12 industry sectors represented in total.
How have home values changed in ZIP code 21111? ▼
According to the FHFA House Price Index, home values in ZIP 21111 increased by 6.1% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 102%. 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 21111? ▼
In ZIP code 21111, 74.8% of residents aged 25+ have a high school diploma or higher, and 63.7% 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 21111? ▼
The mean commute time for workers in ZIP code 21111 is 31.9 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 21111? ▼
In ZIP code 21111, approximately 95.5% of occupied housing units are owner-occupied and 4.5% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 21111? ▼
The poverty rate in ZIP code 21111 is 6.3% 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.