Residential delivery area · Maryland
ZIP Code 20880: Washington Grove, MD
ZIP code 20880 is in Washington Grove, Maryland, entirely in Montgomery County (Census 2020 ZIP-county file). About 580 people live there (Census Bureau, ACS 2020-2024). Median household income is $134,583 (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
- FHFA2023
- ZBP2023
- Town
- Washington Grove · its only residential ZIP
- County
- Montgomery County
- Census places
- Washington Grove
- Metro area
- Washington-Arlington-Alexandria, DC-VA-MD-WV
- House district
- MD-8 119th Congress
- State
- Maryland
- Time zone
- Eastern
- Land area
- 0.3 sq mi · 1,728 people per sq mi
Where is ZIP code 20880?
20880 centers on 39.141°, -77.175° and covers 0.3 square miles of land plus 0.0 of water. It borders 2 ZIP codes: 20877, 20855.
The map draws ZIP code areas only. For the streets inside 20880, 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 20880 compare with the rest of Montgomery County?
| Measure | 20880 | In Montgomery County | In MD |
|---|---|---|---|
| People (ACS 2020-2024) | 577 | 45th of 53 | 385th of 477 |
| Median household income | $135k | not ranked | not ranked |
| Median home value | $613k | not ranked | not ranked |
20880's income and home value are not ranked: it has fewer than 1,000 residents (577). 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 83% 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 20880?
The 2020 Census counted 504 people in 20880; the ACS, which samples households over 2020-2024, estimates 577. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 577±128 (90% margin)
- 2020 Census count
- 504
- Households
- 289
- Median age
- 62.2
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 20880?
Of the 577 people the ACS estimates in 20880, 10.9% are under 18 and 40.6% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (83.9%).
- Under 1810.9%
- 18 to 6448.5%
- 65 and older40.6%
- White, not Hispanic83.9%
- Other or two or more6.1%
- Asian, not Hispanic4.7%
- Hispanic or Latino4.3%
- Black, not Hispanic1.0%
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 20880 earn?
Median household income is $134,583 (ACS 2020-2024).
- Median household income
- $134,583±$39,304
- Income per person
- $83,763
- Below the poverty line
- 3.5%
- Unemployed (of the labor force)
- 3.8%
- Adults 25+ with a bachelor's degree
- 77.7%
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 20880?
- Median home value (owners' estimate)
- $612,700
- Median gross rent
- –
- Homes owned by their occupants
- 99.7%
- Housing units
- 303
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 20880?
3 business establishments had a location in this ZIP code in 2023, 4 fewer than in 2018 (ZIP Code Business Patterns).
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 20880?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 20877 | Gaithersburg | 38,546 | $93k | 0.9 mi |
| 20855 | Derwood | 17,279 | $149k | 2.3 mi |
| 20879 | Gaithersburg | 25,264 | $112k | 1.9 mi (near) |
| 20899 | Gaithersburg | 57 | $24k | 2.2 mi (near) |
| 20850 | Rockville | 50,353 | $126k | 3.6 mi (near) |
| 20886 | Montgomery Village | 34,718 | $99k | 3.7 mi (near) |
| 20878 | Gaithersburg | 66,115 | $144k | 4.5 mi (near) |
| 20853 | Rockville | 31,851 | $159k | 5.1 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.