Residential delivery area · Maryland
ZIP Code 21920: Elk Mills, MD
ZIP code 21920 uses the postal name Elk Mills, Maryland and lies entirely in Cecil County (Census 2020 ZIP-county file). About 1,400 people live there (Census Bureau, ACS 2020-2024). Median household income is $124,146 (Census Bureau, ACS 2020-2024). Its land lies outside any incorporated or census-designated place.
- ACS2020-24
- Census2020
- Town
- Elk Mills · its only residential ZIP
- County
- Cecil County
- Metro area
- Philadelphia-Camden-Wilmington, PA-NJ-DE-MD
- House district
- MD-1 119th Congress
- State
- Maryland
- Time zone
- Eastern
- Land area
- 1.0 sq mi · 1,429 people per sq mi
Where is ZIP code 21920?
21920 centers on 39.656°, -75.841° and covers 1.0 square miles of land plus 0.0 of water. It borders 1 ZIP code: 21921.
The map draws ZIP code areas only. For the streets inside 21920, 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 21920 compare with the rest of Cecil County?
| Measure | 21920 | In Cecil County | In MD |
|---|---|---|---|
| People (ACS 2020-2024) | 1,413 | 11th of 15 | 331st of 477 |
| Median household income | $124k | 1st of 7 | 110th of 293 |
| Median home value | $356k | not ranked | not ranked |
21920's median home value is not ranked: its 90% margin of error (±$95,851) is more than a quarter of the figure ($356,000). Rankings use ZIP codes of 1,000 or more people living in households, with margins at most 25% of the figure.
Its median household income is higher than in 92% of U.S. residential ZIP codes, and it is denser than 82% of all 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 21920?
The 2020 Census counted 555 people in 21920; the ACS, which samples households over 2020-2024, estimates 1,413. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 1,413±693 (90% margin)
- 2020 Census count
- 555
- Households
- 436
- Median age
- 36.7
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 21920?
Of the 1,413 people the ACS estimates in 21920, 25.2% are under 18 and 16.8% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (78.5%), then Hispanic or Latino (12.7%).
- Under 1825.2%
- 18 to 6458.0%
- 65 and older16.8%
- White, not Hispanic78.5%
- Hispanic or Latino12.7%
- Other or two or more8.8%
- Black, not Hispanic0.0%
- Asian, 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 21920 earn?
Median household income is $124,146 (ACS 2020-2024), the highest of the 7 ranked ZIP codes in Cecil County.
- Median household income
- $124,146±$27,988
- Income per person
- $34,843
- Below the poverty line
- 10.0%
- Unemployed (of the labor force)
- 0.0%
- Adults 25+ with a bachelor's degree
- 22.4%
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 21920?
- Median home value (owners' estimate)
- $356,000
- Median gross rent
- $1,346
- Homes owned by their occupants
- 65.4%
- Housing units
- 436
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001).
Which ZIP codes are next to 21920?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 21921 | Elkton | 45,527 | $86k | 2.2 mi |
| 19716 | Newark, DE | 0 | – | 5.1 mi (near) |
| 19717 | Newark, DE | 6,036 | – | 5.1 mi (near) |
| 19702 | Newark, DE | 55,683 | $92k | 6.5 mi (near) |
| 19711 | Newark, DE | 49,432 | $95k | 6.6 mi (near) |
| 19713 | Newark, DE | 30,747 | $77k | 7.0 mi (near) |
| 19350 | Landenberg, PA | 10,945 | $144k | 7.6 mi (near) |
| 21901 | North East | 19,514 | $114k | 8.4 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.