Residential delivery area · Maryland
ZIP Code 20832: Olney, MD
ZIP code 20832 is in Olney, Maryland, entirely in Montgomery County (Census 2020 ZIP-county file). About 26,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $168,524 (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Olney · its only residential ZIP
- County
- Montgomery County
- Census places
- Olney census-designated place
- Metro area
- Washington-Arlington-Alexandria, DC-VA-MD-WV
- House district
- MD-8 119th Congress
- State
- Maryland
- Time zone
- Eastern
- Land area
- 9.6 sq mi · 2,659 people per sq mi
- PO Box ZIPs
- 20830 also use the name Olney
Where is ZIP code 20832?
20832 centers on 39.150°, -77.078° and covers 9.6 square miles of land plus 0.0 of water. It borders 5 ZIP codes: 20860, 20855, 20853, 20833, 20906.
The map draws ZIP code areas only. For the streets inside 20832, 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 20832 compare with the rest of Montgomery County?
| Measure | 20832 | In Montgomery County | In MD |
|---|---|---|---|
| People (ACS 2020-2024) | 25,553 | 23rd of 53 | 105th of 477 |
| Median household income | $169k | 15th of 41 | 30th of 293 |
| Median home value | $627k | 25th of 41 | 43rd of 320 |
Its median household income is higher than in 98% of U.S. residential ZIP codes, and it is denser than 87% 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 20832?
The 2020 Census counted 25,969 people in 20832; the ACS, which samples households over 2020-2024, estimates 25,553. Between the 2010 and 2020 censuses its population grew 4.0% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 25,553
- 2020 Census count
- 25,969+4.0% since 2010 (24,965)
- Households
- 8,411
- Median age
- 41.0
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 20832?
Of the 25,553 people the ACS estimates in 20832, 26.6% are under 18 and 15.4% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (56.4%), then Black (not Hispanic) (12.8%).
- Under 1826.6%
- 18 to 6458.0%
- 65 and older15.4%
- White, not Hispanic56.4%
- Black, not Hispanic12.8%
- Hispanic or Latino12.1%
- Asian, not Hispanic11.7%
- Other or two or more7.0%
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 20832 earn?
Median household income is $168,524 (ACS 2020-2024), the 15th highest of the 41 ranked ZIP codes in Montgomery County. It is not measurably different from 2015-2019 ($168,444 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $168,524
- Income per person
- $66,830
- Below the poverty line
- 4.3%
- Unemployed (of the labor force)
- 3.6%
- Adults 25+ with a bachelor's degree
- 63.8%
- Adjusted gross income per tax return, 2022
- $134,86212,680 returns; wages 69% 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 20832?
FHFA's house price index for 20832, 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 +9.0% in 2025.
- Median home value (owners' estimate)
- $627,000
- Median gross rent
- $2,453
- Homes owned by their occupants
- 86.9%
- Housing units
- 8,582
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 20832?
552 business establishments had a location in this ZIP code in 2023, 1 more than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance110
- Professional, scientific, and technical services98
- Construction53
- Accommodation and food services51
- Other services (except public administration)49
- Retail trade41
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 20832?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 20860 | Sandy Spring | 2,035 | – | 2.3 mi |
| 20855 | Derwood | 17,279 | $149k | 3.0 mi |
| 20853 | Rockville | 31,851 | $159k | 3.5 mi |
| 20833 | Brookeville | 7,860 | $204k | 4.2 mi |
| 20906 | Silver Spring | 70,595 | $98k | 4.5 mi |
| 20862 | Brinklow | 430 | $190k | 3.9 mi (near) |
| 20861 | Ashton | 2,890 | $163k | 4.2 mi (near) |
| 20879 | Gaithersburg | 25,264 | $112k | 4.7 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.
Which other ZIP codes use the name Olney?
1 more ZIP code carries the postal name Olney, MD without a residential delivery area: PO boxes at the post office, or a single organization with its own ZIP code. The Census Bureau publishes no figures for it.
| ZIP | County |
|---|---|
| 20830 | Montgomery County |
Source: GeoNames postal codes (CC BY 4.0), downloaded 2026-10-09; a ZIP code with no Census ZCTA has no residential delivery area.