78599 ZIP Code, Weslaco, TX
78599 is a ZIP code in Weslaco, Texas in Hidalgo County. It covers 27 square miles of land. The closest ZIP codes are 78537, 78558 and 78570. 35,454 people live here in 9,605 households. At about 1,337 people per square mile it has suburban density, and owners and renters are mixed (69% own). Median household income is $58,349, below the Texas median of $78,476; 49% of households have children under 18.
Quick facts
- Mailing city: Weslaco, TX
- County: Hidalgo County
- Land area: 27 sq mi
- Population: 35,454
- Median household income: $58,349
- Carrier routes: 13 (11,234 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 35,454 |
| Households | 9,605 |
| Median household income | $58,349 |
| Income per person | $20,831 |
| Median age | 27.9 |
| Homeowners | 68.8% |
| Median home value | $125,400 |
| Median rent | $1,007 |
| Bachelor's degree or higher | 15.1% |
| Average commute (minutes) | 24.7 |
| Households with kids under 18 | 49.0% |
| Moved in the past year | 8.9% |
| Below the poverty line | 24.4% |
| Broadband internet | 89.8% |
| Speak a non-English language at home | 77.7% |
Household income
| % of households | Value |
|---|---|
| <$10K | 8.4% |
| $10–15K | 5.4% |
| $15–25K | 10.1% |
| $25–35K | 5.6% |
| $35–50K | 14.0% |
| $50–75K | 17.6% |
| $75–100K | 14.7% |
| $100–150K | 15.6% |
| $150–200K | 5.6% |
| $200K+ | 3.0% |
Age
| % of all residents | Value |
|---|---|
| <10 | 19.7% |
| 10–19 | 17.8% |
| 20–24 | 8.6% |
| 25–34 | 13.4% |
| 35–44 | 14.3% |
| 45–54 | 10.3% |
| 55–64 | 7.9% |
| 65–74 | 4.6% |
| 75+ | 3.4% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 25.0% |
| Owned outright | 40.1% |
| Rented | 28.9% |
| Vacant | 6.0% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 66.6% |
| Townhome | 0.9% |
| 2–4 units | 7.7% |
| 5–19 units | 5.7% |
| 20+ units | 6.6% |
| Mobile / other | 12.5% |
Businesses in 78599
176 business establishments with 2,666 employees (ZIP Codes Business Patterns 2023).
- Retail Trade: 32
- Health Care and Social Assistance: 22
- Accommodation and Food Services: 20
- Construction: 18
- Real Estate and Rental and Leasing: 12
- Transportation and Warehousing: 10
- Professional, Scientific, and Technical Services: 10
- Other Services (except Public Administration): 10
EDDM carrier routes
78599 has 13 USPS carrier routes with 11,234 residential and 518 business mailboxes. Open the EDDM route map.
Carrier routes in 78599
78599 has 13 USPS carrier routes (3 city (C), 10 rural (R)) with 11,234 residential and 518 business mailboxes. Routes range from 16 homes (C013) to 1,278 homes (R014); the median route has 890 homes. The Census counted 9,605 households in 78599 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 1 |
| 250–499 | 1 |
| 500–749 | 1 |
| 750–999 | 7 |
| 1,000–1,499 | 3 |
| 1,500+ | 0 |
Best routes in 78599 for…
Highest income
For bigger-ticket offers: remodeling, pools, financial planning, private schools.
- Route R016 — Est. median household income $79,675, 380 homes
- Route C005 — Est. median household income $72,486, 1,202 homes
- Route R004 — Est. median household income $72,388, 930 homes
- Route R003 — Est. median household income $71,773, 890 homes
- Route R006 — Est. median household income $69,272, 1,238 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 R008 — Est. families with children under 18 62.7%, 984 homes
- Route R009 — Est. families with children under 18 60.7%, 870 homes
- Route R006 — Est. families with children under 18 53.6%, 1,238 homes
- Route R014 — Est. families with children under 18 50.7%, 1,278 homes
- Route R011 — Est. families with children under 18 49.9%, 975 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 R003 — Est. owner-occupied homes 89.4%, 890 homes
- Route R006 — Est. owner-occupied homes 84.3%, 1,238 homes
- Route R016 — Est. owner-occupied homes 83.4%, 380 homes
- Route R001 — Est. owner-occupied homes 83.1%, 873 homes
- Route R010 — Est. owner-occupied homes 81.6%, 747 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 R008 — Est. residents who moved in the past year 15.9%, 984 homes
- Route C005 — Est. residents who moved in the past year 14.9%, 1,202 homes
- Route C031 — Est. residents who moved in the past year 14.4%, 851 homes
- Route R004 — Est. residents who moved in the past year 9.2%, 930 homes
- Route R014 — Est. residents who moved in the past year 9.1%, 1,278 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 R004 — Est. homes built 2010 or later 33.4%, 930 homes
- Route R011 — Est. homes built 2010 or later 30.7%, 975 homes
- Route R016 — Est. homes built 2010 or later 30.6%, 380 homes
- Route C005 — Est. homes built 2010 or later 27.7%, 1,202 homes
- Route R009 — Est. homes built 2010 or later 26.8%, 870 homes
Select these 5 routes on the route map
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C031 — USPS business mailboxes 171, 851 homes
- Route C005 — USPS business mailboxes 115, 1,202 homes
- Route R014 — USPS business mailboxes 68, 1,278 homes
- Route C013 — USPS business mailboxes 37, 16 homes
- Route R011 — USPS business mailboxes 27, 975 homes
Select these 5 routes on the route map
Every carrier route in 78599
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C005 | City | 1,202 | 115 | $72,486 | 52.6% | 41.3% | 14.9% |
| C013 | City | 16 | 37 | $42,046 | 52.8% | 29.0% | 14.8% |
| C031 | City | 851 | 171 | $41,976 | 52.8% | 32.0% | 14.4% |
| R001 | Rural | 873 | 10 | $62,654 | 83.1% | 41.7% | 5.1% |
| R003 | Rural | 890 | 7 | $71,773 | 89.4% | 43.7% | 5.7% |
| R004 | Rural | 930 | 4 | $72,388 | 72.1% | 45.4% | 9.2% |
| R006 | Rural | 1,238 | 22 | $69,272 | 84.3% | 53.6% | 5.0% |
| R008 | Rural | 984 | 15 | $44,784 | 63.0% | 62.7% | 15.9% |
| R009 | Rural | 870 | 16 | $45,600 | 73.0% | 60.7% | 5.8% |
| R010 | Rural | 747 | 25 | $68,441 | 81.6% | 43.6% | 5.5% |
| R011 | Rural | 975 | 27 | $55,605 | 72.0% | 49.9% | 7.3% |
| R014 | Rural | 1,278 | 68 | $46,752 | 68.4% | 50.7% | 9.1% |
| R016 | Rural | 380 | 1 | $79,675 | 83.4% | 37.5% | 3.1% |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 78599 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
- 78537 — Donna city, TX (5.3 mi)
- 78558 — La Blanca CDP, TX (5.7 mi)
- 78570 — Mercedes city, TX (5.7 mi)
- 78543 — La Blanca CDP, TX (5.9 mi)
- 78562 — La Villa city, TX (7.6 mi)
- 78596 — Weslaco city, TX (8.3 mi)
- 78579 — Progreso city, TX (9.2 mi)
- 78516 — Alamo city, TX (9.7 mi)
Areas that include 78599
- Weslaco, TX ZIP codes — 2 ZIP codes
- Mila Doce, TX ZIP codes — 2 ZIP codes
- Olivarez, TX ZIP codes — 1 ZIP code
- Midway North, TX ZIP codes — 2 ZIP codes
- Hidalgo County ZIP codes — 30 ZIP codes
- Texas ZIP code data
Where it ranks
- No. 7 of 25: highest median household income in Hidalgo County
- No. 5 of 25: lowest median age in Hidalgo County
Mail every home in 78599
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) 78599, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 78599 in?
- 78599 is a Weslaco, TX mailing address. By land area, 23% lies inside Weslaco, 14% lies inside Olivarez, 5% lies inside Mila Doce and 5% lies inside Midway North; the rest is outside any Census-defined city or community.
- What county is 78599 in?
- 78599 is in Hidalgo County.
- What is the population of 78599?
- About 35,454 people (±3,430), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 32,500.
- What is the median household income in 78599?
- $58,349 (±$5,176), 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 78599?
- 13 USPS carrier routes with 11,234 residential and 518 business mailboxes (11,752 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 78599?
- The closest, measured center to center: 78537 (5.3 mi, Donna), 78558 (5.7 mi, La Blanca), 78570 (5.7 mi, Mercedes), 78543 (5.9 mi, La Blanca), 78562 (7.6 mi, La Villa) and 78596 (8.3 mi, Weslaco).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.