77373 ZIP Code, Spring, TX
77373 is a ZIP code in Spring, Texas in Harris County. It covers 24 square miles of land, centered about 21 miles north of downtown Houston. The closest ZIP codes are 77386, 77073 and 77388. 69,739 people live here in 22,966 households, more than in 9 of every 10 Texas ZIP codes. At about 2,935 people per square mile it has suburban density, and most homes are owner-occupied (73%). Median household income is $88,617, above the Texas median of $78,476.
Quick facts
- Mailing city: Spring, TX
- County: Harris County
- Metro area: Houston
- Land area: 24 sq mi
- Population: 69,739
- Median household income: $88,617
- Carrier routes: 31 (26,880 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 69,739 |
| Households | 22,966 |
| Median household income | $88,617 |
| Income per person | $34,563 |
| Median age | 32.3 |
| Homeowners | 72.8% |
| Median home value | $231,400 |
| Median rent | $1,706 |
| Bachelor's degree or higher | 25.9% |
| Average commute (minutes) | 33.6 |
| Households with kids under 18 | 38.0% |
| Moved in the past year | 13.6% |
| Below the poverty line | 10.7% |
| Broadband internet | 94.9% |
| Speak a non-English language at home | 35.4% |
Household income
| % of households | Value |
|---|---|
| <$10K | 1.9% |
| $10–15K | 1.2% |
| $15–25K | 3.9% |
| $25–35K | 2.4% |
| $35–50K | 8.9% |
| $50–75K | 19.5% |
| $75–100K | 23.2% |
| $100–150K | 20.9% |
| $150–200K | 9.5% |
| $200K+ | 8.6% |
Age
| % of all residents | Value |
|---|---|
| <10 | 16.3% |
| 10–19 | 13.6% |
| 20–24 | 6.6% |
| 25–34 | 16.9% |
| 35–44 | 14.9% |
| 45–54 | 11.5% |
| 55–64 | 10.2% |
| 65–74 | 7.2% |
| 75+ | 2.8% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 47.3% |
| Owned outright | 21.8% |
| Rented | 25.6% |
| Vacant | 5.2% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 83.6% |
| Townhome | 2.6% |
| 2–4 units | 3.1% |
| 5–19 units | 3.2% |
| 20+ units | 6.5% |
| Mobile / other | 1.1% |
Businesses in 77373
704 business establishments with 8,814 employees (ZIP Codes Business Patterns 2023).
- Retail Trade: 120
- Construction: 100
- Accommodation and Food Services: 75
- Professional, Scientific, and Technical Services: 70
- Other Services (except Public Administration): 60
- Health Care and Social Assistance: 51
- Real Estate and Rental and Leasing: 45
- Wholesale Trade: 37
EDDM carrier routes
77373 has 31 USPS carrier routes with 26,880 residential and 1,029 business mailboxes. Open the EDDM route map.
Carrier routes in 77373
77373 has 31 USPS carrier routes (31 city (C)) with 26,880 residential and 1,029 business mailboxes. Routes range from 220 homes (C013) to 1,442 homes (C037); the median route has 859 homes. The Census counted 22,966 households in 77373 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 1 |
| 250–499 | 1 |
| 500–749 | 5 |
| 750–999 | 18 |
| 1,000–1,499 | 6 |
| 1,500+ | 0 |
Best routes in 77373 for…
Highest income
For bigger-ticket offers: remodeling, pools, financial planning, private schools.
- Route C068 — Est. median household income $152,208, 972 homes
- Route C046 — Est. median household income $108,248, 971 homes
- Route C006 — Est. median household income $103,330, 817 homes
- Route C061 — Est. median household income $102,861, 888 homes
- Route C037 — Est. median household income $98,313, 1,442 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 C025 — Est. families with children under 18 54.3%, 884 homes
- Route C006 — Est. families with children under 18 53.6%, 817 homes
- Route C038 — Est. families with children under 18 52.8%, 710 homes
- Route C026 — Est. families with children under 18 49.4%, 1,380 homes
- Route C028 — Est. families with children under 18 48.6%, 1,091 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 C039 — Est. owner-occupied homes 95.5%, 788 homes
- Route C017 — Est. owner-occupied homes 94.3%, 921 homes
- Route C026 — Est. owner-occupied homes 94.0%, 1,380 homes
- Route C068 — Est. owner-occupied homes 93.6%, 972 homes
- Route C020 — Est. owner-occupied homes 93.4%, 632 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 C027 — Est. residents who moved in the past year 29.8%, 1,116 homes
- Route C033 — Est. residents who moved in the past year 24.2%, 859 homes
- Route C067 — Est. residents who moved in the past year 23.2%, 1,304 homes
- Route C023 — Est. residents who moved in the past year 22.6%, 767 homes
- Route C003 — Est. residents who moved in the past year 20.2%, 542 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 C039 — Est. homes built 2010 or later 43.4%, 788 homes
- Route C026 — Est. homes built 2010 or later 42.2%, 1,380 homes
- Route C027 — Est. homes built 2010 or later 41.3%, 1,116 homes
- Route C032 — Est. homes built 2010 or later 37.5%, 907 homes
- Route C060 — Est. homes built 2010 or later 37.4%, 739 homes
Select these 5 routes on the route map
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C013 — USPS business mailboxes 349, 220 homes
- Route C055 — USPS business mailboxes 195, 763 homes
- Route C061 — USPS business mailboxes 119, 888 homes
- Route C060 — USPS business mailboxes 115, 739 homes
- Route C018 — USPS business mailboxes 57, 982 homes
Select these 5 routes on the route map
Every carrier route in 77373
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C001 | City | 767 | 30 | $96,937 | 89.6% | 26.5% | 8.7% |
| C002 | City | 764 | 3 | $85,677 | 55.7% | 38.1% | 8.6% |
| C003 | City | 542 | 3 | $59,886 | 60.4% | 37.2% | 20.2% |
| C006 | City | 817 | 0 | $103,330 | 74.1% | 53.6% | 14.3% |
| C007 | City | 637 | 0 | $89,682 | 80.4% | 37.5% | 2.8% |
| C010 | City | 1,003 | 15 | $82,465 | 75.8% | 29.4% | 13.7% |
| C013 | City | 220 | 349 | $87,574 | 83.8% | 21.8% | 14.0% |
| C017 | City | 921 | 4 | $91,880 | 94.3% | 45.9% | 5.6% |
| C018 | City | 982 | 57 | $70,889 | 46.3% | 34.5% | 16.0% |
| C020 | City | 632 | 2 | $84,565 | 93.4% | 42.3% | 3.3% |
| C023 | City | 767 | 0 | $80,671 | 70.1% | 42.8% | 22.6% |
| C025 | City | 884 | 0 | $80,020 | 73.7% | 54.3% | 8.7% |
| C026 | City | 1,380 | 1 | $91,767 | 94.0% | 49.4% | 10.4% |
| C027 | City | 1,116 | 1 | $88,110 | 77.6% | 28.8% | 29.8% |
| C028 | City | 1,091 | 1 | $93,824 | 79.1% | 48.6% | 13.9% |
| C029 | City | 847 | 3 | $76,201 | 68.8% | 42.4% | 7.2% |
| C032 | City | 907 | 0 | $73,051 | 67.8% | 43.5% | 9.9% |
| C033 | City | 859 | 22 | $86,020 | 60.5% | 25.7% | 24.2% |
| C036 | City | 995 | 0 | $85,181 | 68.9% | 36.8% | 16.8% |
| C037 | City | 1,442 | 1 | $98,313 | 92.9% | 41.9% | 7.4% |
| C038 | City | 710 | 27 | $82,317 | 87.5% | 52.8% | 11.4% |
| C039 | City | 788 | 27 | $90,301 | 95.5% | 47.3% | 8.8% |
| C046 | City | 971 | 8 | $108,248 | 84.4% | 31.5% | 12.4% |
| C053 | City | 992 | 9 | $93,250 | 84.5% | 30.2% | 3.3% |
| C055 | City | 763 | 195 | $95,991 | 85.6% | 24.3% | 11.8% |
| C056 | City | 806 | 1 | $89,996 | 71.5% | 33.6% | 6.6% |
| C060 | City | 739 | 115 | $80,603 | 69.3% | 42.8% | 20.0% |
| C061 | City | 888 | 119 | $102,861 | 67.9% | 28.2% | 16.1% |
| C064 | City | 374 | 0 | $90,909 | 67.9% | 43.0% | 15.0% |
| C067 | City | 1,304 | 7 | $86,984 | 61.1% | 28.3% | 23.2% |
| C068 | City | 972 | 29 | $152,208 | 93.6% | 48.3% | 4.1% |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 77373 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
- 77386 — Houston city, TX (3.1 mi)
- 77073 — Houston city, TX (4.4 mi)
- 77388 — Houston city, TX (4.9 mi)
- 77090 — Houston city, TX (5 mi)
- 77032 — Houston city, TX (5.7 mi)
- 77338 — Houston city, TX (6.9 mi)
- 77014 — Houston city, TX (7.2 mi)
- 77380 — The Woodlands CDP, TX (7.2 mi)
Areas that include 77373
- Spring, TX ZIP codes — 8 ZIP codes
- Harris County ZIP codes — 136 ZIP codes
- Houston ZIP code map — 238 ZIP codes
- Texas ZIP code data
Where it ranks
- No. 24 of 133: highest share of owner-occupied homes in Harris County
- No. 25 of 134: lowest median age in Harris County
- No. 24 of 133: fastest population growth in Harris County
- No. 5 of 8: highest share of households with children in Spring, TX
- No. 3 of 8: highest share of residents who moved in during the past year in Spring, TX
- No. 1 of 8: lowest median age in Spring, TX
- No. 4 of 8: fastest population growth in Spring, TX
Mail every home in 77373
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.
Spring EDDM mailing
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 77373, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 77373 in?
- 77373 is a Spring, TX mailing address. By land area, 95% lies inside Spring and 5% lies inside Houston.
- What county is 77373 in?
- 77373 is in Harris County.
- What is the population of 77373?
- About 69,739 people (±4,249), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 63,413.
- What is the median household income in 77373?
- $88,617 (±$3,537), 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 77373?
- 31 USPS carrier routes with 26,880 residential and 1,029 business mailboxes (27,908 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 77373?
- The closest, measured center to center: 77386 (3.1 mi, Houston), 77073 (4.4 mi, Houston), 77388 (4.9 mi, Houston), 77090 (5 mi, Houston), 77032 (5.7 mi, Houston) and 77338 (6.9 mi, Houston).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.