78575 ZIP Code, Olmito, TX
78575 is a ZIP code in Olmito, Texas in Cameron County. It covers 8.3 square miles of land. The closest ZIP codes are 78520, 78526 and 78586. 4,575 people live here in 1,620 households. With about 549 people per square mile it is lightly settled, and owners and renters are mixed (56% own). Median household income is $71,765, close to the Texas median of $78,476.
Quick facts
- Mailing city: Olmito, TX
- County: Cameron County
- Land area: 8.3 sq mi
- Population: 4,575
- Median household income: $71,765
- Carrier routes: 3 (2,689 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 4,575 |
| Households | 1,620 |
| Median household income | $71,765 |
| Income per person | $39,404 |
| Median age | 38.2 |
| Homeowners | 56.0% |
| Median home value | $249,500 |
| Median rent | $1,085 |
| Bachelor's degree or higher | 44.2% |
| Average commute (minutes) | 25.7 |
| Households with kids under 18 | 35.9% |
| Moved in the past year | 6.4% |
| Below the poverty line | 22.2% |
| Broadband internet | 89.4% |
| Speak a non-English language at home | 71.5% |
Household income
| % of households | Value |
|---|---|
| <$10K | 5.9% |
| $10–15K | 10.0% |
| $15–25K | 7.2% |
| $25–35K | 1.2% |
| $35–50K | 15.5% |
| $50–75K | 11.9% |
| $75–100K | 13.7% |
| $100–150K | 11.5% |
| $150–200K | 13.1% |
| $200K+ | 10.0% |
Age
| % of all residents | Value |
|---|---|
| <10 | 12.8% |
| 10–19 | 17.4% |
| 20–24 | 9.6% |
| 25–34 | 7.0% |
| 35–44 | 12.2% |
| 45–54 | 13.8% |
| 55–64 | 11.4% |
| 65–74 | 7.2% |
| 75+ | 8.5% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 18.5% |
| Owned outright | 28.7% |
| Rented | 37.0% |
| Vacant | 15.8% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 64.7% |
| Townhome | 3.2% |
| 2–4 units | 5.2% |
| 5–19 units | 9.7% |
| 20+ units | 13.8% |
| Mobile / other | 3.4% |
Businesses in 78575
92 business establishments with 806 employees (ZIP Codes Business Patterns 2023).
- Health Care and Social Assistance: 16
- Retail Trade: 14
- Construction: 9
- Real Estate and Rental and Leasing: 9
- Accommodation and Food Services: 9
- Wholesale Trade: 6
- Transportation and Warehousing: 5
- Professional, Scientific, and Technical Services: 5
EDDM carrier routes
78575 has 3 USPS carrier routes with 2,689 residential and 97 business mailboxes. Open the EDDM route map.
Carrier routes in 78575
78575 has 3 USPS carrier routes (3 rural (R)) with 2,689 residential and 97 business mailboxes. Routes range from 862 homes (R036) to 934 homes (R040); the median route has 893 homes. The Census counted 1,620 households in 78575 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 0 |
| 500–749 | 0 |
| 750–999 | 3 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 78575 for…
Highest income
For bigger-ticket offers: remodeling, pools, financial planning, private schools.
- Route R036 — Est. median household income $96,164, 862 homes
- Route R040 — Est. median household income $76,688, 934 homes
- Route R035 — Est. median household income $68,643, 893 homes
Select these 3 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 R035 — Est. families with children under 18 47.1%, 893 homes
- Route R040 — Est. families with children under 18 46.8%, 934 homes
- Route R036 — Est. families with children under 18 31.2%, 862 homes
Select these 3 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 R040 — Est. owner-occupied homes 81.7%, 934 homes
- Route R036 — Est. owner-occupied homes 65.2%, 862 homes
- Route R035 — Est. owner-occupied homes 59.4%, 893 homes
Select these 3 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 R036 — Est. residents who moved in the past year 10.1%, 862 homes
- Route R040 — Est. residents who moved in the past year 6.9%, 934 homes
- Route R035 — Est. residents who moved in the past year 3.2%, 893 homes
Select these 3 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 R040 — Est. homes built 2010 or later 48.3%, 934 homes
- Route R035 — Est. homes built 2010 or later 24.1%, 893 homes
- Route R036 — Est. homes built 2010 or later 7.7%, 862 homes
Select these 3 routes on the route map
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route R035 — USPS business mailboxes 55, 893 homes
- Route R040 — USPS business mailboxes 40, 934 homes
- Route R036 — USPS business mailboxes 2, 862 homes
Select these 3 routes on the route map
Every carrier route in 78575
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| R035 | Rural | 893 | 55 | $68,643 | 59.4% | 47.1% | 3.2% |
| R036 | Rural | 862 | 2 | $96,164 | 65.2% | 31.2% | 10.1% |
| R040 | Rural | 934 | 40 | $76,688 | 81.7% | 46.8% | 6.9% |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 78575 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
- 78520 — Brownsville city, TX (5 mi)
- 78526 — Brownsville city, TX (6.7 mi)
- 78586 — San Benito city, TX (7.9 mi)
- 78567 — Los Indios town, TX (11.7 mi)
- 78566 — Brownsville city, TX (12.3 mi)
- 78578 — Brownsville city, TX (15.1 mi)
- 78521 — Brownsville city, TX (15.7 mi)
- 78552 — Harlingen city, TX (16.7 mi)
Areas that include 78575
- Brownsville, TX ZIP codes — 6 ZIP codes
- Rancho Viejo, TX ZIP codes — 1 ZIP code
- Olmito, TX ZIP codes — 1 ZIP code
- Cameron County ZIP codes — 16 ZIP codes
- Texas ZIP code data
Where it ranks
- No. 1 of 13: highest median household income in Cameron County
- No. 2 of 13: highest median home value in Cameron County
- No. 4 of 13: highest median age in Cameron County
Mail every home in 78575
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) 78575, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 78575 in?
- 78575 is a Olmito, TX mailing address. By land area, 32% lies inside Brownsville, 25% lies inside Rancho Viejo and 8% lies inside Olmito; the rest is outside any Census-defined city or community.
- What county is 78575 in?
- 78575 is in Cameron County.
- What is the population of 78575?
- About 4,575 people (±617), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 5,270.
- What is the median household income in 78575?
- $71,765 (±$9,956), 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 78575?
- 3 USPS carrier routes with 2,689 residential and 97 business mailboxes (2,786 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 78575?
- The closest, measured center to center: 78520 (5 mi, Brownsville), 78526 (6.7 mi, Brownsville), 78586 (7.9 mi, San Benito), 78567 (11.7 mi, Los Indios), 78566 (12.3 mi, Brownsville) and 78578 (15.1 mi, Brownsville).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.