| ZIP Codes: | 27 ZIP Codes (16 Standard, 10 PO Box, 1 Unique) [See All] |
| Area Codes: | 470 / 678 / 770 / 943 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:11:44 PM |
| Population: | 905,470 [See All] |
| FIPS: | 13135 |
| CBSA: | Atlanta-Sandy Springs-Roswell, GA |
| Land Area: | 410 sq mi |
| Water Area: | 11 sq mi |
| Coordinates: | 33.9604, -84.0771 |
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905,470 residents live across 27 ZIPs covering 410 sq mi, served by 11 distinct USPS-recognized cities.
Population moved from 782,262 to 905,470 from 2014 to 2024 — a +15.8% change. 15 ZIPs gained residents, 1 lost.
The county's wealthiest ZIP 30024 (Suwanee, $143,879 median) and poorest ZIP 30093 (Norcross, $48,404) are 13.0 miles apart — a 3.0× income gap across local geography.
Median home values vary 2.1× across this county — from $265,700 in 30093 (Norcross) to $551,000 in 30024 (Suwanee).
Density varies 4× across the county — from 1,058 people/sq mi in 30019 (Dacula) to 4,091 in 30044 (Lawrenceville).
Educational attainment ranges from 20.2% bachelor's+ in 30093 (Norcross) to 62.8% in 30024 (Suwanee) — the breadth of educational profiles across the area.
Within Georgia, this is the #2 most populous of 161 counties and ranks #14 for median household income with the #24 fastest decade growth .
On the national stage, Gwinnett County is the #63 most populous US county .
Hosts 1 single-entity Unique ZIP: 30099Primerica Financial Services .
Weighted by population, the typical household earns about $92,928 across the county — reflecting what a typical resident sees, not a simple ZIP average.
39.6% of adults age 25+ hold a bachelor's degree or higher (231,247 of 584,005 reporting).
16 Standard delivery, 10 PO Box only, 1 single-entity Unique ZIPs serve this county.
1 ZIP in this county where more than 60% of adults 25+ hold a bachelor's degree — typically college campuses, research enclaves, or tech corridors.
Gwinnett County grew 15.8% over the past decade — concentrated in 3 high-growth ZIPs:
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 30044 | Lawrenceville | Standard | 101,475 | $77,321 | 24.8 | 21.4% |
| 30024 | Suwanee | Standard | 88,067 | $143,879 | 42.7 | 24.2% |
| 30043 | Lawrenceville | Standard | 87,929 | $94,096 | 33.6 | 5.4% |
| 30096 | Duluth | Standard | 71,732 | $74,656 | 23.6 | 3.4% |
| 30047 | Lilburn | Standard | 70,121 | $88,652 | 27.7 | 12.5% |
| 30519 | Buford | Standard | 59,997 | $102,553 | 34.1 | 42.6% |
| 30518 | Buford | Standard | 57,912 | $96,936 | 46.9 | 24.2% |
| 30039 | Snellville | Standard | 52,783 | $93,701 | 25.9 | 25.4% |
| 30019 | Dacula | Standard | 51,162 | $116,583 | 48.3 | 17.8% |
| 30093 | Norcross | Standard | 46,410 | $48,404 | 12.3 | -15.8% |
| 30045 | Lawrenceville | Standard | 44,993 | $104,350 | 21.2 | 32.7% |
| 30046 | Lawrenceville | Standard | 41,850 | $67,268 | 15.8 | 16.9% |
| 30078 | Snellville | Standard | 41,597 | $98,257 | 17.6 | 19.9% |
| 30092 | Peachtree Corners | Standard | 36,992 | $79,309 | 11.2 | 11.8% |
| 30017 | Grayson | Standard | 26,620 | $99,917 | 11.7 | 16.9% |
| 30071 | Norcross | Standard | 25,830 | $64,515 | 12.0 | 11.8% |
| 30091 | Norcross | PO Box | — | — | 0.0 | — |
| 30010 | Norcross | PO Box | — | — | 0.0 | — |
| 30095 | Duluth | PO Box | — | — | 0.0 | — |
| 30029 | North Metro | PO Box | — | — | 0.0 | — |
| 30048 | Lilburn | PO Box | — | — | 0.0 | — |
| 30042 | Lawrenceville | PO Box | — | — | 0.0 | — |
| 30003 | Norcross | PO Box | — | — | 0.0 | — |
| 30099 | Duluth | Unique | — | — | 0.0 | — |
| 30026 | North Metro | PO Box | — | — | 0.0 | — |
| 30515 | Buford | PO Box | — | — | 0.0 | — |
| 30049 | Lawrenceville | PO Box | — | — | 0.0 | — |