Residential delivery area · Maryland
ZIP Code 21071: Glyndon, MD
ZIP code 21071 uses the postal name Glyndon, Maryland and lies entirely in Baltimore County (Census 2020 ZIP-county file). About 400 people live there (Census Bureau, ACS 2020-2024). Median household income is $213,500 (Census Bureau, ACS 2020-2024). Its land lies outside any incorporated or census-designated place.
- ACS2020-24
- Census2020
- FHFA2021
- ZBP2023
- Town
- Glyndon · its only residential ZIP
- County
- Baltimore County
- Metro area
- Baltimore-Columbia-Towson, MD
- House district
- MD-2 119th Congress
- State
- Maryland
- Time zone
- Eastern
- Land area
- 1.5 sq mi · 269 people per sq mi
Where is ZIP code 21071?
21071 centers on 39.484°, -76.810° and covers 1.5 square miles of land plus 0.0 of water. It borders 1 ZIP code: 21136.
The map draws ZIP code areas only. For the streets inside 21071, 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 21071 compare with the rest of Baltimore County?
| Measure | 21071 | In Baltimore County | In MD |
|---|---|---|---|
| People (ACS 2020-2024) | 404 | 51st of 57 | 405th of 477 |
| Median household income | $214k | not ranked | not ranked |
| Median home value | $451k | not ranked | not ranked |
21071's income and home value are not ranked: it has fewer than 1,000 residents (404). 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 66% 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 21071?
The 2020 Census counted 619 people in 21071; the ACS, which samples households over 2020-2024, estimates 404. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 404±325 (90% margin)
- 2020 Census count
- 619
- Households
- 130
- Median age
- 33.0
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 21071?
Of the 404 people the ACS estimates in 21071, 28.7% are under 18 and 17.8% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (92.8%).
- Under 1828.7%
- 18 to 6453.5%
- 65 and older17.8%
- White, not Hispanic92.8%
- Other or two or more5.0%
- Asian, not Hispanic2.2%
- Hispanic or Latino0.0%
- Black, not Hispanic0.0%
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 21071 earn?
Median household income is $213,500 (ACS 2020-2024).
- Median household income
- $213,500±$146,942
- Income per person
- $64,007
- Below the poverty line
- 4.2%
- Unemployed (of the labor force)
- 0.0%
- Adults 25+ with a bachelor's degree
- 83.3%
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 21071?
- Median home value (owners' estimate)
- $450,500
- Median gross rent
- –
- Homes owned by their occupants
- 100.0%
- Housing units
- 130
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 21071?
32 business establishments had a location in this ZIP code in 2023, the same count as in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade5
- Professional, scientific, and technical services4
- Health care and social assistance4
- Other services (except public administration)4
- Construction3
- Administrative and support and waste management and remediation services3
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 21071?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 21136 | Reisterstown | 32,088 | $119k | 3.6 mi |
| 21117 | Owings Mills | 62,816 | $102k | 4.3 mi (near) |
| 21023 | Butler | 66 | $85k | 4.6 mi (near) |
| 21048 | Finksburg | 10,481 | $132k | 6.2 mi (near) |
| 21155 | Upperco | 3,313 | $123k | 6.2 mi (near) |
| 21030 | Cockeysville | 25,827 | $89k | 6.3 mi (near) |
| 21133 | Randallstown | 31,398 | $81k | 7.3 mi (near) |
| 21153 | Stevenson | 456 | $220k | 7.4 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.