77478 ZIP Code, Sugar Land, TX
77478 is a ZIP code in Sugar Land, Texas in Fort Bend County. It covers 10 square miles of land, centered about 17 miles southwest of downtown Houston. The closest ZIP codes are 77477, 77498 and 77099. 23,182 people live here in 9,186 households. At about 2,313 people per square mile it has suburban density, and most homes are owner-occupied (76%). Median household income is $118,495, well above the Texas median of $78,476; the median age is 45.9, older than most ZIP codes.
Quick facts
- Mailing city: Sugar Land, TX
- County: Fort Bend County
- Metro area: Houston
- Land area: 10 sq mi
- Population: 23,182
- Median household income: $118,495
- Carrier routes: 22 (9,593 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 23,182 |
| Households | 9,186 |
| Median household income | $118,495 |
| Income per person | $64,732 |
| Median age | 45.9 |
| Homeowners | 75.7% |
| Median home value | $404,600 |
| Median rent | $1,768 |
| Bachelor's degree or higher | 61.2% |
| Average commute (minutes) | 27.7 |
| Households with kids under 18 | 26.0% |
| Moved in the past year | 8.9% |
| Below the poverty line | 5.2% |
| Broadband internet | 94.4% |
| Speak a non-English language at home | 43.7% |
Household income
| % of households | Value |
|---|---|
| <$10K | 3.0% |
| $10–15K | 0.7% |
| $15–25K | 2.1% |
| $25–35K | 5.6% |
| $35–50K | 6.5% |
| $50–75K | 13.8% |
| $75–100K | 10.4% |
| $100–150K | 20.0% |
| $150–200K | 13.2% |
| $200K+ | 24.5% |
Age
| % of all residents | Value |
|---|---|
| <10 | 8.1% |
| 10–19 | 11.1% |
| 20–24 | 4.9% |
| 25–34 | 13.3% |
| 35–44 | 11.8% |
| 45–54 | 10.0% |
| 55–64 | 15.3% |
| 65–74 | 15.4% |
| 75+ | 10.2% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 37.3% |
| Owned outright | 37.1% |
| Rented | 23.2% |
| Vacant | 2.4% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 80.6% |
| Townhome | 1.9% |
| 2–4 units | 0.8% |
| 5–19 units | 6.9% |
| 20+ units | 9.6% |
| Mobile / other | 0.1% |
Businesses in 77478
2,459 business establishments with 43,252 employees (ZIP Codes Business Patterns 2023).
- Health Care and Social Assistance: 400
- Professional, Scientific, and Technical Services: 360
- Information: 320
- Retail Trade: 216
- Accommodation and Food Services: 195
- Finance and Insurance: 192
- Other Services (except Public Administration): 141
- Wholesale Trade: 132
EDDM carrier routes
77478 has 22 USPS carrier routes with 9,593 residential and 2,286 business mailboxes. Open the EDDM route map.
Carrier routes in 77478
77478 has 22 USPS carrier routes (20 city (C), 2 rural (R)) with 9,593 residential and 2,286 business mailboxes. Routes range from 193 homes (C040) to 1,015 homes (C012); the median route has 402 homes. The Census counted 9,186 households in 77478 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 5 |
| 250–499 | 8 |
| 500–749 | 5 |
| 750–999 | 2 |
| 1,000–1,499 | 1 |
| 1,500+ | 0 |
Best routes in 77478 for…
Highest income
For bigger-ticket offers: remodeling, pools, financial planning, private schools.
- Route C009 — Est. median household income $167,270, 680 homes
- Route C010 — Est. median household income $145,455, 378 homes
- Route C028 — Est. median household income $145,302, 375 homes
- Route C003 — Est. median household income $140,976, 402 homes
- Route C006 — Est. median household income $140,131, 423 homes
Select these 5 routes on the route map
Often mailed by: Home services EDDM, Real estate EDDM postcards, Landscaping and lawn care mailers
Most families with kids
For tutoring, youth sports, pediatric dental, child care and family dining.
- Route C016 — Est. families with children under 18 36.2%, 196 homes
- Route C012 — Est. families with children under 18 32.5%, 1,015 homes
- Route C021 — Est. families with children under 18 32.3%, 607 homes
- Route C040 — Est. families with children under 18 31.5%, 193 homes
- Route C023 — Est. families with children under 18 31.1%, 242 homes
Select these 5 routes on the route map
Often mailed by: Dental practice EDDM, Healthcare and clinic mailers
Most homeowners
Owners decide on roofs, HVAC, lawns, solar and insurance; renters usually can't.
- Route R007 — Est. owner-occupied homes 94.2%, 566 homes
- Route C031 — Est. owner-occupied homes 92.0%, 558 homes
- Route C009 — Est. owner-occupied homes 91.6%, 680 homes
- Route C023 — Est. owner-occupied homes 91.6%, 242 homes
- Route C021 — Est. owner-occupied homes 90.4%, 607 homes
Select these 5 routes on the route map
Often mailed by: Roofing direct mail, HVAC postcards
Most new movers
New residents are still choosing a dentist, a gym and a lawn service.
- Route C012 — Est. residents who moved in the past year 18.8%, 1,015 homes
- Route C036 — Est. residents who moved in the past year 16.4%, 817 homes
- Route C040 — Est. residents who moved in the past year 13.8%, 193 homes
- Route C016 — Est. residents who moved in the past year 13.0%, 196 homes
- Route R028 — Est. residents who moved in the past year 12.9%, 228 homes
Select these 5 routes on the route map
Often mailed by: Restaurant EDDM menus and offers, Gym and fitness mailers
Newest homes
Newer subdivisions: landscaping, window treatments, fencing, security, home warranties.
- Route C040 — Est. homes built 2010 or later 31.5%, 193 homes
- Route C024 — Est. homes built 2010 or later 23.7%, 264 homes
- Route C020 — Est. homes built 2010 or later 21.4%, 242 homes
- Route C002 — Est. homes built 2010 or later 18.5%, 296 homes
- Route C030 — Est. homes built 2010 or later 18.1%, 811 homes
Select these 5 routes on the route map
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C023 — USPS business mailboxes 378, 242 homes
- Route C032 — USPS business mailboxes 250, 412 homes
- Route C016 — USPS business mailboxes 237, 196 homes
- Route C031 — USPS business mailboxes 208, 558 homes
- Route C040 — USPS business mailboxes 203, 193 homes
Select these 5 routes on the route map
Every carrier route in 77478
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C002 | City | 296 | 84 | $134,383 | 84.5% | 19.7% | 6.9% |
| C003 | City | 402 | 1 | $140,976 | 88.5% | 26.5% | 4.8% |
| C004 | City | 571 | 11 | $123,256 | 72.4% | 21.6% | 8.0% |
| C006 | City | 423 | 4 | $140,131 | 87.9% | 30.3% | 5.7% |
| C009 | City | 680 | 2 | $167,270 | 91.6% | 16.9% | 12.0% |
| C010 | City | 378 | 0 | $145,455 | 89.6% | 17.0% | 2.5% |
| C012 | City | 1,015 | 20 | $90,882 | 48.5% | 32.5% | 18.8% |
| C016 | City | 196 | 237 | $103,660 | 63.7% | 36.2% | 13.0% |
| C020 | City | 242 | 192 | $137,418 | 82.4% | 21.4% | 9.0% |
| C021 | City | 607 | 11 | $126,329 | 90.4% | 32.3% | 1.4% |
| C023 | City | 242 | 378 | $105,935 | 91.6% | 31.1% | 1.8% |
| C024 | City | 264 | 73 | $135,417 | 79.7% | 21.8% | 10.4% |
| C026 | City | 317 | 141 | $123,986 | 73.7% | 29.7% | 8.8% |
| C028 | City | 375 | 81 | $145,302 | 89.6% | 17.2% | 2.6% |
| C030 | City | 811 | 29 | $116,346 | 80.8% | 23.3% | 12.6% |
| C031 | City | 558 | 208 | $104,435 | 92.0% | 30.7% | 1.8% |
| C032 | City | 412 | 250 | $102,030 | 89.9% | 29.7% | 2.0% |
| C036 | City | 817 | 66 | $92,538 | 66.1% | 26.1% | 16.4% |
| C037 | City | 0 | 193 | $147,906 | — | — | — |
| C040 | City | 193 | 203 | $122,908 | 69.1% | 31.5% | 13.8% |
| R007 | Rural | 566 | 11 | $139,477 | 94.2% | 30.4% | 9.2% |
| R028 | Rural | 228 | 91 | $109,982 | 87.4% | 28.9% | 12.9% |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 77478 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
- 77477 — Stafford city, TX (2.5 mi)
- 77498 — Sugar Land city, TX (3.3 mi)
- 77099 — Houston city, TX (3.9 mi)
- 77479 — Sugar Land city, TX (4 mi)
- 77031 — Houston city, TX (4.4 mi)
- 77489 — Missouri City city, TX (5.7 mi)
- 77071 — Houston city, TX (5.8 mi)
- 77083 — Mission Bend CDP, TX (5.8 mi)
Areas that include 77478
- Sugar Land, TX ZIP codes — 3 ZIP codes
- Fort Bend County ZIP codes — 26 ZIP codes
- Houston ZIP code map — 238 ZIP codes
- Texas ZIP code data
Where it ranks
- No. 11 of 215: highest median age in the Houston area
- No. 6 of 21: highest median household income in Fort Bend County
- No. 5 of 21: highest median home value in Fort Bend County
- No. 2 of 21: highest median age in Fort Bend County
Mail every home in 77478
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.
Sugar Land EDDM mailing
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 77478, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 77478 in?
- 77478 is a Sugar Land, TX mailing address. By land area, 99% lies inside Sugar Land.
- What county is 77478 in?
- 77478 is in Fort Bend County.
- What is the population of 77478?
- About 23,182 people (±1,331), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 24,536.
- What is the median household income in 77478?
- $118,495 (±$12,102), compared with $78,476 for Texas as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 77478?
- 22 USPS carrier routes with 9,593 residential and 2,286 business mailboxes (11,900 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 77478?
- The closest, measured center to center: 77477 (2.5 mi, Stafford), 77498 (3.3 mi, Sugar Land), 77099 (3.9 mi, Houston), 77479 (4 mi, Sugar Land), 77031 (4.4 mi, Houston) and 77489 (5.7 mi, Missouri City).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.