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 FIPS 24005
- State
- Maryland
- Country
- United States
- Coordinates
- 39.5330, -76.7432 — precision precise (locality)
View on OpenStreetMap - Population
- 83 (ZCTA, ACS 5-year)
- Population density
- 78 / sq mi
- Land area
- 1.1 sq mi (2.8 km²) (ZCTA, ACS 5-year)
- Median household income
- $81,438
- Per-capita income
- $42,730
- Median age
- 62.1
- Households
- 37
- Housing units
- 37
- Median home value
- $625,000
- Congressional district
- MD-2 (119th Congress)
- USDA hardiness zone
- 7b (5 to 10 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/New_York (UTC−5 / UTC−4 DST)
Tools: compare 21023 with another ZIP · ZIPs within 25 miles · distance from 21023
Map of ZIP code 21023
Climate — monthly normals
Warmest month Jul (avg high 85°F), coldest Jan (avg low 24°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 40 | 43 | 52 | 65 | 73 | 81 | 85 | 83 | 77 | 65 | 54 | 44 |
| Avg low °F | 24 | 25 | 32 | 42 | 51 | 60 | 64 | 63 | 56 | 45 | 36 | 28 |
| Precip in | 3.6 | 2.9 | 4.1 | 3.8 | 4.0 | 3.8 | 4.7 | 4.2 | 5.1 | 4.2 | 3.4 | 4.0 |
NOAA 1991–2020 climate normals from the nearest station: MILLERS 4 NE (13.2 mi) · NOAA NCEI
Places in ZIP 21023
- 1 restaurants & cafés
- 1 playgrounds
- 1 post offices
- 1 police & fire stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
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) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page