30078 ZIP Code, Snellville, GA
30078 is a ZIP code in Snellville, Georgia in Gwinnett County. It covers 17 square miles of land. The closest ZIP codes are 30017, 30039 and 30044. 41,597 people live here in 13,295 households. At about 2,403 people per square mile it has suburban density, and most homes are owner-occupied (83%). Median household income is $98,257, above the Georgia median of $77,353.
Quick facts
- Mailing city: Snellville, GA
- County: Gwinnett County
- Land area: 17 sq mi
- Population: 41,597
- Median household income: $98,257
- Carrier routes: 22 (14,326 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 41,597 |
| Households | 13,295 |
| Median household income | $98,257 |
| Income per person | $39,107 |
| Median age | 38.4 |
| Homeowners | 82.6% |
| Median home value | $353,200 |
| Median rent | $1,788 |
| Bachelor's degree or higher | 40.6% |
| Average commute (minutes) | 35.5 |
| Households with kids under 18 | 39.3% |
| Moved in the past year | 8.8% |
| Below the poverty line | 9.3% |
| Broadband internet | 95.3% |
| Speak a non-English language at home | 32.3% |
Household income
| % of households | Value |
|---|---|
| <$10K | 3.6% |
| $10–15K | 2.8% |
| $15–25K | 4.6% |
| $25–35K | 3.6% |
| $35–50K | 5.8% |
| $50–75K | 14.3% |
| $75–100K | 15.8% |
| $100–150K | 22.3% |
| $150–200K | 13.1% |
| $200K+ | 14.1% |
Age
| % of all residents | Value |
|---|---|
| <10 | 11.1% |
| 10–19 | 15.5% |
| 20–24 | 7.1% |
| 25–34 | 12.3% |
| 35–44 | 13.5% |
| 45–54 | 12.8% |
| 55–64 | 14.3% |
| 65–74 | 8.0% |
| 75+ | 5.3% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 55.3% |
| Owned outright | 23.5% |
| Rented | 16.4% |
| Vacant | 4.7% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 87.6% |
| Townhome | 3.9% |
| 2–4 units | 5.0% |
| 5–19 units | 0.9% |
| 20+ units | 1.7% |
| Mobile / other | 1.0% |
Businesses in 30078
1,224 business establishments with 14,318 employees (ZIP Codes Business Patterns 2023).
- Health Care and Social Assistance: 269
- Retail Trade: 185
- Professional, Scientific, and Technical Services: 144
- Other Services (except Public Administration): 135
- Accommodation and Food Services: 103
- Construction: 94
- Finance and Insurance: 70
- Real Estate and Rental and Leasing: 62
EDDM carrier routes
30078 has 22 USPS carrier routes with 14,326 residential and 1,355 business mailboxes. Open the EDDM route map.
Carrier routes in 30078
30078 has 22 USPS carrier routes (10 city (C), 12 rural (R)) with 14,326 residential and 1,355 business mailboxes. Routes range from 424 homes (C010) to 1,069 homes (C006); the median route has 638 homes. The Census counted 13,295 households in 30078 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 4 |
| 500–749 | 13 |
| 750–999 | 3 |
| 1,000–1,499 | 2 |
| 1,500+ | 0 |
Best routes in 30078 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C012 — USPS business mailboxes 402, 433 homes
- Route C010 — USPS business mailboxes 211, 424 homes
- Route C009 — USPS business mailboxes 182, 599 homes
- Route R032 — USPS business mailboxes 160, 461 homes
- Route C008 — USPS business mailboxes 131, 634 homes
Select these 5 routes on the route map
Every carrier route in 30078
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C001 | City | 641 | 0 | $79,908 | — | — | — |
| C002 | City | 679 | 1 | $63,139 | — | — | — |
| C003 | City | 1,036 | 16 | $79,492 | — | — | — |
| C004 | City | 765 | 72 | $79,908 | — | — | — |
| C006 | City | 1,069 | 79 | $86,839 | — | — | — |
| C007 | City | 656 | 3 | $112,526 | — | — | — |
| C008 | City | 634 | 131 | $63,139 | — | — | — |
| C009 | City | 599 | 182 | $79,492 | — | — | — |
| C010 | City | 424 | 211 | $94,338 | — | — | — |
| C012 | City | 433 | 402 | $80,750 | — | — | — |
| R001 | Rural | 855 | 1 | $71,256 | — | — | — |
| R002 | Rural | 531 | 22 | $114,851 | — | — | — |
| R005 | Rural | 556 | 8 | $80,750 | — | — | — |
| R006 | Rural | 653 | 18 | $86,839 | — | — | — |
| R008 | Rural | 815 | 20 | $79,492 | — | — | — |
| R010 | Rural | 493 | 3 | $68,270 | — | — | — |
| R012 | Rural | 686 | 8 | $79,908 | — | — | — |
| R013 | Rural | 605 | 3 | $88,457 | — | — | — |
| R014 | Rural | 570 | 0 | $68,270 | — | — | — |
| R017 | Rural | 656 | 4 | $86,839 | — | — | — |
| R019 | Rural | 509 | 11 | $181,336 | — | — | — |
| R032 | Rural | 461 | 160 | $181,336 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 30078 on the EDDM route map.
How route demographics are estimated
Mailbox counts come from USPS; demographics are estimates
The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).
How a route gets its figures: the block-group length-share method
We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.
Margins of error
Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.
Different years
USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.
Why some routes show identical figures
Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.
Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Nearby ZIP codes
- 30017 — Grayson city, GA (3.7 mi)
- 30039 — Snellville city, GA (4.4 mi)
- 30044 — Lawrenceville city, GA (5.1 mi)
- 30047 — Lilburn city, GA (5.4 mi)
- 30046 — Lawrenceville city, GA (6.3 mi)
- 30087 — Tucker city, GA (6.7 mi)
- 30045 — Dacula city, GA (7.4 mi)
- 30052 — Loganville city, GA (7.6 mi)
Areas that include 30078
- Snellville, GA ZIP codes — 2 ZIP codes
- Gwinnett County ZIP codes — 25 ZIP codes
- Georgia ZIP code data
Where it ranks
- No. 8 of 25: highest median household income in Gwinnett County
- No. 4 of 25: highest share of owner-occupied homes in Gwinnett County
- No. 6 of 25: highest median age in Gwinnett County
- No. 5 of 25: fastest population growth in Gwinnett County
Mail every home in 30078
Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 30078, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 30078 in?
- 30078 is a Snellville, GA mailing address. By land area, 53% lies inside Snellville; the rest is outside any Census-defined city or community.
- What county is 30078 in?
- 30078 is in Gwinnett County.
- What is the population of 30078?
- About 41,597 people (±2,699), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 38,350.
- What is the median household income in 30078?
- $98,257 (±$9,141), compared with $77,353 for Georgia as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 30078?
- 22 USPS carrier routes with 14,326 residential and 1,355 business mailboxes (15,682 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 30078?
- The closest, measured center to center: 30017 (3.7 mi, Grayson), 30039 (4.4 mi, Snellville), 30044 (5.1 mi, Lawrenceville), 30047 (5.4 mi, Lilburn), 30046 (6.3 mi, Lawrenceville) and 30087 (6.7 mi, Tucker).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.