ZIP Code 21111
standardSource:
Monkton · Baltimore County · Maryland
- Population
- 4,903
- Median income
- $136,304
- Median home value
- $607,200
- Bachelor's or higher
- 63.7%
- Land area
- 90.8 sq mi
54/sq mi
▲ 79% vs US
higher than 94% of US ZIPs
▲ 118% vs US
higher than 91% of US ZIPs
Median age 48.7
New York
ZIP code 21111 in Monkton, Maryland has a population of 4,903. The median household income is $136,304, which is 79% above the national average. Median home value is $607,200, 118% above the US average. 63.7% of residents hold a bachelor's degree or higher.
ZIP code 21111 is classified by USPS as a standard delivery area and covers roughly 90.8 square miles in Monkton, Baltimore County, Maryland. The area is home to 4,903 residents, producing a population density of 54 people per square mile, and falls within the New York time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 21111 against Maryland and the nation.
On the economic side, the median household income for ZIP 21111 sits at $136,304 (19% above the Maryland average), while per-capita income is $69,759. The poverty rate stands at 6.3% and the unemployment rate at 8.6%. On housing, the median home value is $607,200 (36% above the state average) with median rent at $1,359 per month, and 95.5% of occupied units are owner-occupied, a direct signal of whether 21111 behaves more like a homeowner neighborhood or a renter-heavy ZIP.
Education and household profile round out the picture: 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 is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →
Top industries in ZIP 21111
Top 5 sectors by establishment count
Which industries have the most business establishments in ZIP 21111.
- Construction
Construction
25 establishments
- Professional, scientific, and technical services
Professional, scientific, and technical services
17 establishments
- Retail trade
Retail trade
12 establishments
- Real estate and rental and leasing
Real estate and rental and leasing
11 establishments
- Health care and social assistance 9
Health care and social assistance
9 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, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + HUD FMR + FHFA HPI ACS demographics, ZBP business establishments, HUD Fair Market Rents, 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; HUD FMR + 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
Who lives in ZIP 21111?
48.7
Median Age
52.3%
Male
47.7%
Female
2.4%
Foreign-Born
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
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
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
$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 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
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Frequently Asked Questions
What county is ZIP code 21111 in? ▼
What is the population of ZIP code 21111? ▼
What is the median household income in ZIP 21111? ▼
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How many businesses are in ZIP code 21111? ▼
What are the main industries in ZIP code 21111? ▼
How have home values changed in ZIP code 21111? ▼
What is the education level in ZIP code 21111? ▼
What is the average commute time in ZIP 21111? ▼
What percentage of residents own vs. rent in ZIP 21111? ▼
What is the poverty rate in ZIP code 21111? ▼
ZIP Code Research Guides
Official Data Resources for Monkton, MD
Verify and explore additional data for this area using these official government sources.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023). Business data: Source: Census ZIP Code Business Patterns (ZBP) 2023. Home value trends: Source: FHFA House Price Index (HPI), Five-Digit ZIP Codes.
PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.
Read our methodology , how this data is sourced, computed, and verified.