78384 ZIP Code, San Diego, TX
78384 is a ZIP code in San Diego, Texas in Duval County. It covers 591 square miles of land. The closest ZIP codes are 78341, 78357 and 78332. 5,747 people live here in 1,610 households. It is rural, with fewer than 100 people per square mile, and owners and renters are mixed (67% own). Median household income is $47,603, well below the Texas median of $78,476.
Quick facts
- Mailing city: San Diego, TX
- County: Duval County
- Land area: 591 sq mi
- Population: 5,747
- Median household income: $47,603
- Carrier routes: 3 (1,471 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 5,747 |
| Households | 1,610 |
| Median household income | $47,603 |
| Income per person | $18,794 |
| Median age | 33.2 |
| Homeowners | 67.3% |
| Median home value | $78,100 |
| Median rent | $764 |
| Bachelor's degree or higher | 7.0% |
| Average commute (minutes) | 28.5 |
| Households with kids under 18 | 39.0% |
| Moved in the past year | 17.1% |
| Below the poverty line | 39.9% |
| Broadband internet | 66.6% |
| Speak a non-English language at home | 52.8% |
Household income
| % of households | Value |
|---|---|
| <$10K | 7.2% |
| $10–15K | 16.9% |
| $15–25K | 4.6% |
| $25–35K | 8.1% |
| $35–50K | 17.5% |
| $50–75K | 20.6% |
| $75–100K | 14.1% |
| $100–150K | 5.7% |
| $150–200K | 2.8% |
| $200K+ | 2.5% |
Age
| % of all residents | Value |
|---|---|
| <10 | 16.7% |
| 10–19 | 16.5% |
| 20–24 | 3.0% |
| 25–34 | 19.7% |
| 35–44 | 15.0% |
| 45–54 | 8.9% |
| 55–64 | 5.9% |
| 65–74 | 9.1% |
| 75+ | 5.3% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 20.0% |
| Owned outright | 31.0% |
| Rented | 24.7% |
| Vacant | 24.4% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 82.3% |
| Townhome | 0.0% |
| 2–4 units | 3.5% |
| 5–19 units | 4.7% |
| 20+ units | 0.4% |
| Mobile / other | 9.0% |
Businesses in 78384
54 business establishments with 503 employees (ZIP Codes Business Patterns 2023).
- Retail Trade: 11
- Accommodation and Food Services: 9
- Health Care and Social Assistance: 6
- Mining, Quarrying, and Oil and Gas Extraction: 5
- Professional, Scientific, and Technical Services: 5
- Construction: 4
- Real Estate and Rental and Leasing: 4
- Finance and Insurance: 3
EDDM carrier routes
78384 has 3 USPS carrier routes with 1,471 residential and 80 business mailboxes. Open the EDDM route map.
Carrier routes in 78384
78384 has 3 USPS carrier routes (2 city (C), 1 highway contract (H)) with 1,471 residential and 80 business mailboxes. Routes range from 78 homes (H001) to 733 homes (C001); the median route has 660 homes. The Census counted 1,610 households in 78384 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 1 |
| 250–499 | 0 |
| 500–749 | 2 |
| 750–999 | 0 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 78384 for…
Highest income
For bigger-ticket offers: remodeling, pools, financial planning, private schools.
- Route C002 — Est. median household income $56,198, 660 homes
- Route C001 — Est. median household income $49,078, 733 homes
Select these 2 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 C001 — Est. families with children under 18 35.8%, 733 homes
- Route C002 — Est. families with children under 18 32.3%, 660 homes
Select these 2 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 C001 — Est. owner-occupied homes 67.6%, 733 homes
- Route C002 — Est. owner-occupied homes 66.2%, 660 homes
Select these 2 routes on the route map
Often mailed by: Roofing direct mail, HVAC postcards
Newest homes
Newer subdivisions: landscaping, window treatments, fencing, security, home warranties.
- Route C002 — Est. homes built 2010 or later 2.8%, 660 homes
- Route C001 — Est. homes built 2010 or later 1.7%, 733 homes
Select these 2 routes on the route map
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C001 — USPS business mailboxes 50, 733 homes
- Route C002 — USPS business mailboxes 28, 660 homes
- Route H001 — USPS business mailboxes 2, 78 homes
Select these 3 routes on the route map
Every carrier route in 78384
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C001 | City | 733 | 50 | $49,078 | 67.6% | 35.8% | — |
| C002 | City | 660 | 28 | $56,198 | 66.2% | 32.3% | — |
| H001 | Highway contract | 78 | 2 | $43,359 | 84.8% | 29.6% | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 78384 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
- 78341 — Benavides city, TX (11 mi)
- 78357 — Freer city, TX (15 mi)
- 78332 — Alice city, TX (20.6 mi)
- 78342 — Ben Bolt CDP, TX (24.8 mi)
Areas that include 78384
- San Diego, TX ZIP codes — 1 ZIP code
- Duval County ZIP codes — 6 ZIP codes
- Texas ZIP code data
Mail every home in 78384
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) 78384, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 78384 in?
- 78384 is a San Diego, TX mailing address. None of its land lies inside a Census-defined city or community.
- What county is 78384 in?
- 78384 is in Duval County.
- What is the population of 78384?
- About 5,747 people (±725), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 5,653.
- What is the median household income in 78384?
- $47,603 (±$14,333), 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 78384?
- 3 USPS carrier routes with 1,471 residential and 80 business mailboxes (1,551 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 78384?
- The closest, measured center to center: 78341 (11 mi, Benavides), 78357 (15 mi, Freer), 78332 (20.6 mi, Alice) and 78342 (24.8 mi, Ben Bolt).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.