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ZIP Code Database - Facts & Stats

Data Last Updated: October 1, 2021

ZIP Codes for City of Olney, MD

Olney, MD Covers 2 ZIP Codes

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 20830P.O. BoxMontgomery0240 / 301
ZIP Code 20832StandardMontgomery24,965240 / 301

Timezone(s):Eastern (GMT -05:00)
Population:33,844 (More Details)
Male Population:16,202
Female Population:17,642
Median Age:42
ZIP Codes:2
Area Codes:2
Total Area:507 square miles (county)
Land Area:493 square miles (county)
Water Area:14 square miles (county)

Olney, MD Demographic Information *

Total population33,844
Male population16,202
Female population17,642
Median age (years)41.9
White Population24,651
Black Population3,691
Indian Population67
Asian Population3,670
Hawaiian Population6
Hispanic Population2,871
Median age (Male)40.6
Median age (Female)42.9
Total households11,606
Family households (families)9,447
Average household size2.91
Average family size3.25
Total housing units11,879
* Demographic data is based on 2010 Census.

Olney, MD Other Information

213 Cities within 30 miles of Olney, MD Products


  1. U.S. Postal Service [Last Updated: 10/1/2021],
  2. Internal Data Creation [Last Updated: 10/1/2021],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],