ZIP code · Snellville · Georgia · United States

ZIP code 30078 — Snellville

ZIP code 30078 serves Snellville, Georgia.

Postal code
30078
Single source Value from one source, not cross-checked.
City
Snellville
County
Gwinnett FIPS 13135
State
Georgia
Country
United States
Coordinates
33.8635, -84.0081 — precision precise (locality)
View on OpenStreetMap
Population
41,041 (ZCTA, ACS 5-year)
Population density
2,371 / sq mi
Land area
17.3 sq mi (44.8 km²) (ZCTA, ACS 5-year)
Median household income
$90,054
Per-capita income
$36,346
Median age
38.3
Households
13,211
Housing units
13,784
Median home value
$316,600
Median gross rent
$1,641 / month
Congressional district
GA-13 (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
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 32°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F545866748187898983746455
Avg low °F323540475664686762514135
Precip in5.04.45.24.34.24.64.14.94.33.44.02.5

NOAA 1991–2020 climate normals from the nearest station: WINDER 4S (16.8 mi) · NOAA NCEI

Places in ZIP 30078

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