ZIP code · Butler · Maryland · United States
ZIP code 21023 — Butler
ZIP code 21023 serves Butler, Maryland.
- Postal code
- 21023Single source Value from one source, not cross-checked.
- City
- Butler
- County
- Baltimore
- State
- Maryland
- Country
- United States
- Coordinates
- 39.5330, -76.7432 — precision precise (locality)
View on OpenStreetMap - Population
- 83 (ZCTA, ACS 5-year)
- Median household income
- $81,438
- Median age
- 62.1
- Time zone
- America/New_York (UTC−5 / UTC−4 DST)
- Area codes
- 443, 410, 667 (from the nearest rate centre)Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS). Data generated on 2026-08-21. Methodology · Report an error on this page