Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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zipcodes.pro — CITY/MD/OLNEY

Olney ZIP codes, Maryland

Olney, MD has 2 ZIP codes (20832 and 20830) and area codes 240, 301 and 227. The largest is 20832.

USPS city name
2 ZIP codes
Overlapping the city
4 more
Population
35,797
Area codes
240, 301, 227

NANPA lists no telephone rate centre for Olney itself, so these are the area codes of the nearest one, Gaithersburg (4.7 miles). A town on an area-code boundary can differ from its neighbour.

Mail addressed to Olney uses the ZIP codes above. 4 more ZIP codes cover part of the city but are addressed as somewhere else; they are listed separately below.

Olney in numbers

About 35,797 people live in Olney, in 11,829 households, the 31st-largest of Maryland's 527 census places. The median household income is $171,458 a year, 65% above the Maryland median of $103,678 (US: $80,734). The median owner-occupied home is valued at $656,600 (56% above the Maryland median), and median gross rent is $2,404 a month. The median age is 41.6; 65.0% of adults 25 and over hold a bachelor's degree or higher (43.4% across Maryland); the average commute takes 32 minutes.

Population35,797Olney35,797
Households11,829Olney11,829
Median age41.6Olney41.6Maryland39.4US 38.9
Median household income$171,458Olney$171,458Maryland$103,678US $80,734
Median home value$656,600Olney$656,600Maryland$419,900US $332,700
Median gross rent$2,404Olney$2,404Maryland$1,705US $1,413
Bachelor's degree or higher65.0%Olney65.0%Maryland43.4%US 35.7%
Mean commute31.8 minOlney31.8 minMaryland31.1 minUS 26.4 min
Population density2,212 / sq miOlney2,212 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Olney CDP. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Olney

ZIP codes with the USPS city name Olney
ZIP City Type Population Median income Median home
20832 Olney , MD Standard 25,553 $168,524 $627,000
20830 Olney , MD No street area — — —

Other ZIP codes overlapping Olney

These ZIP codes cover part of Olney but are addressed as somewhere else.

ZIP codes overlapping Olney
ZIP City Type Population Median income Median home
20833 Brookeville , MD Standard 7,860 $204,375 $797,100
20853 Rockville , MD Standard 31,851 $159,080 $631,900
20860 Sandy Spring , MD Standard 2,035 — $654,200
20906 Silver Spring , MD Standard 70,595 $97,521 $455,800

Map of Olney ZIP codes

2083220830

The ZIP codes of Olney, MD, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Olney

The nearest larger towns are Aspen Hill (53,279 people, 3.5 mi), Rockville (67,671 people, 6.2 mi) and Wheaton (52,926 people, 6.6 mi).

Towns near Olney
TownPopulationDistance
Leisure World 8,882 2.8 mi
Aspen Hill 53,279 3.5 mi
Ashton-Sandy Spring 5,630 3.9 mi
Redland 18,665 4.0 mi
Layhill 5,497 4.1 mi
Cloverly 16,646 5.0 mi
Glenmont 17,208 5.3 mi
Rockville 67,671 6.2 mi
Colesville 14,519 6.2 mi
Flower Hill 13,794 6.3 mi
Wheaton 52,926 6.6 mi
Gaithersburg 69,825 6.6 mi
North Kensington 8,954 7.3 mi
Burtonsville 10,203 7.4 mi

More nearby: every ZIP code in Montgomery County · Maryland ZIP codes

Cite this page

zipcodes.pro. “Olney, MD ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/md/olney

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