ZIP code · Clarkston · Georgia · United States

ZIP code 30021 — Clarkston

ZIP code 30021 serves Clarkston, Georgia.

Postal code
30021
Single source Value from one source, not cross-checked.
City
Clarkston
County
DeKalb FIPS 13089
State
Georgia
Country
United States
Coordinates
33.8101, -84.2388 — precision precise (locality)
View on OpenStreetMap
Population
26,386 (ZCTA, ACS 5-year)
Population density
7,380 / sq mi
Land area
3.6 sq mi (9.3 km²) (ZCTA, ACS 5-year)
Median household income
$48,158
Per-capita income
$20,066
Median age
24.7
Households
6,828
Housing units
8,416
Median home value
$256,000
Median gross rent
$1,265 / month
Congressional districts
GA-4 (also GA-5) (119th Congress)
USDA hardiness zone
8a (10 to 15 °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)
Area codes
404, 770, 678, 470, 943 (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.

Climate — monthly normals

Warmest month Jul (avg high 89°F), coldest Jan (avg low 33°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F525664738086898883736354
Avg low °F333642495966706963514136
Precip in4.64.54.73.93.84.74.74.54.13.44.24.4

NOAA 1991–2020 climate normals from the nearest station: ATLANTA PEACHTREE AP (5.8 mi) · NOAA NCEI

Places in ZIP 30021

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