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 Moderate-density area
- $136,304
- Median income Above-median income area
- $607,200
- Median home value Above-median home value
- 63.7%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
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.
FHFA HPI release change
What changed in the latest House Price Index year
- FHFA House Price Index values in ZIP 21111 (Monkton, MD) rose +6.1% from 2023 to 2024. The all-transactions index moved from 190.7 in 2023 to 202.4 in 2024 (2000 = 100).
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 average Maryland ZIP), while per-capita income is $69,759. The poverty rate is 6.3%, with unemployment at 8.6%; those measures add context to the income figure. Housing is both higher-cost and owner-heavy: median home value is $607,200 (36% above the average Maryland ZIP), while 95.5% of occupied homes are owner-occupied and median rent is $1,359.
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. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Baltimore County, so 21111 can be compared with both its immediate and county-level context.
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.
- 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 + 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
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 ZIP avg
$69,759
Per Capita Income
6.3%
Poverty Rate
8.6%
Unemployment Rate
31.9 min
Mean Commute Time
How ZIP 21111 ranks among Maryland ZIPs
Monkton, MD household income vs. every Maryland ZIP code
Median household income among 419 reporting Maryland ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$136,304 Top 28% higher than 72% of 419 Maryland ZIPs
Each bar is a $20K-wide band; taller bars hold more Maryland 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?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
1,939housing units
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 ZIP avg
$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.
- 21093
Lutherville Timonium (21093)
36,465 residents
- 21030
Cockeysville (21030)
24,355 residents
- 21047 11,873
Fallston (21047)
11,873 residents
- 21084 7,652
Jarrettsville (21084)
7,652 residents
- 21131 7,253
Phoenix (21131)
7,253 residents
- 21120 6,967
Parkton (21120)
6,967 residents
- 21152 5,544
Sparks Glencoe (21152)
5,544 residents
- 21161 5,490
White Hall (21161)
5,490 residents
- 21111 4,903
Monkton (21111)
4,903 residents
What this shows Among its immediate neighbors, ZIP 21111 ranks #9 by population - useful context the national average alone can't give.
ZIP 21111 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 21131
Phoenix (21131)
$197,619 median income
- 21013
Baldwin (21013)
$171,354 median income
- 21120
Parkton (21120)
$162,052 median income
- 21047
Fallston (21047)
$157,500 median income
- 21111
Monkton (21111)
$136,304 median income
- 21093
Lutherville Timonium (21093)
$125,528 median income
- 21084
Jarrettsville (21084)
$121,509 median income
- 21152
Sparks Glencoe (21152)
$121,350 median income
- 21161
White Hall (21161)
$108,094 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.
| 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 |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 21111, both outside MD so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (4,903 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Baltimore County
Related Areas
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.
Related
Take this with you
What to do with ZIP 21111's numbers, next.
- See how ZIP 21111 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Monkton, MD ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
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ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.