Residential delivery area · Maryland
ZIP Code 21013: Baldwin, MD
ZIP code 21013 uses the postal name Baldwin, Maryland and lies mostly in Baltimore County (71% of its land) with the rest in Harford County (Census 2020 ZIP-county file). About 5,600 people live there (Census Bureau, ACS 2020-2024). Median household income is $171,354 (Census Bureau, ACS 2020-2024). By Census place, 7% of its land lies in Fallston (a census-designated place); 94% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Baldwin · its only residential ZIP
- County
- Baltimore County (71%); Harford County (29%)
- Census places
- Fallston census-designated place
- Metro area
- Baltimore-Columbia-Towson, MD
- House district
- MD-1 119th Congress
- State
- Maryland
- Time zone
- Eastern
- Land area
- 15.0 sq mi · 374 people per sq mi
Where is ZIP code 21013?
21013 centers on 39.511°, -76.491° and covers 15.0 square miles of land plus 0.0 of water. It borders 6 ZIP codes: 21082, 21047, 21051, 21057, 21131, 21111.
The map draws ZIP code areas only. For the streets inside 21013, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 21013 compare with the rest of Baltimore County?
| Measure | 21013 | In Baltimore County | In MD |
|---|---|---|---|
| People (ACS 2020-2024) | 5,610 | 38th of 57 | 229th of 477 |
| Median household income | $171k | not ranked | not ranked |
| Median home value | $572k | 9th of 45 | 62nd of 320 |
21013's median household income is not ranked: its 90% margin of error (±$45,045) is more than a quarter of the figure ($171,354). Rankings use ZIP codes of 1,000 or more people living in households, with margins at most 25% of the figure.
It is denser than 69% of U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 21013?
The 2020 Census counted 4,861 people in 21013; the ACS, which samples households over 2020-2024, estimates 5,610. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 5,610±922 (90% margin)
- 2020 Census count
- 4,861
- Households
- 1,843
- Median age
- 40.7
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 21013?
Of the 5,610 people the ACS estimates in 21013, 23.6% are under 18 and 23.5% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (88.3%).
- Under 1823.6%
- 18 to 6452.9%
- 65 and older23.5%
- White, not Hispanic88.3%
- Other or two or more4.4%
- Hispanic or Latino4.3%
- Black, not Hispanic2.1%
- Asian, not Hispanic0.9%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 21013 earn?
Median household income is $171,354 (ACS 2020-2024).
- Median household income
- $171,354±$45,045
- Income per person
- $68,260
- Below the poverty line
- 3.4%
- Unemployed (of the labor force)
- 0.6%
- Adults 25+ with a bachelor's degree
- 56.0%
- Adjusted gross income per tax return, 2022
- $162,0282,400 returns; wages 61% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 21013?
FHFA's house price index for 21013, built from repeat sales and appraisals of the same homes, rose 54% from 2015 to 2025 and rose 39% from 2020 to 2025, and moved +6.6% in 2025.
- Median home value (owners' estimate)
- $572,100
- Median gross rent
- $1,183
- Homes owned by their occupants
- 93.8%
- Housing units
- 1,894
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 21013?
78 business establishments had a location in this ZIP code in 2023, 1 fewer than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction24
- Professional, scientific, and technical services10
- Administrative and support and waste management and remediation services8
- Other services (except public administration)7
- Finance and insurance5
- Real estate and rental and leasing5
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 21013?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 21082 | Hydes | 626 | $146k | 2.5 mi |
| 21047 | Fallston | 13,852 | $158k | 3.0 mi |
| 21051 | Fork | 172 | $233k | 3.3 mi |
| 21057 | Glen Arm | 4,386 | $146k | 4.5 mi |
| 21131 | Phoenix | 7,141 | $198k | 5.3 mi |
| 21111 | Monkton | 4,714 | $136k | 6.9 mi |
| 21087 | Kingsville | 5,537 | $129k | 6.0 mi (near) |
| 21084 | Jarrettsville | 7,070 | $122k | 7.2 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.