78648 ZIP Code, Luling, TX
78648 is a ZIP code in Luling, Texas — mostly in Caldwell County (76% of its land), with smaller parts in Guadalupe and Gonzales counties. It covers 133 square miles of land, centered about 40 miles south of downtown Austin. The closest ZIP codes are 78658, 78661 and 78638. 7,863 people live here in 3,274 households. It is rural, with fewer than 100 people per square mile, and owners and renters are mixed (70% own). Median household income is $57,621, below the Texas median of $78,476.
Quick facts
- Mailing city: Luling, TX
- County: Caldwell County
- Metro area: Austin
- Land area: 133 sq mi
- Population: 7,863
- Median household income: $57,621
- Carrier routes: 7 (3,344 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 7,863 |
| Households | 3,274 |
| Median household income | $57,621 |
| Income per person | $31,099 |
| Median age | 43.9 |
| Homeowners | 69.6% |
| Median home value | $217,500 |
| Median rent | $1,038 |
| Bachelor's degree or higher | 12.2% |
| Average commute (minutes) | 27.9 |
| Households with kids under 18 | 24.8% |
| Moved in the past year | 12.7% |
| Below the poverty line | 9.0% |
| Broadband internet | 87.8% |
| Speak a non-English language at home | 30.6% |
Household income
| % of households | Value |
|---|---|
| <$10K | 7.6% |
| $10–15K | 2.1% |
| $15–25K | 8.1% |
| $25–35K | 10.7% |
| $35–50K | 12.3% |
| $50–75K | 27.7% |
| $75–100K | 11.7% |
| $100–150K | 8.8% |
| $150–200K | 7.4% |
| $200K+ | 3.6% |
Age
| % of all residents | Value |
|---|---|
| <10 | 11.0% |
| 10–19 | 11.7% |
| 20–24 | 4.3% |
| 25–34 | 10.2% |
| 35–44 | 13.9% |
| 45–54 | 9.8% |
| 55–64 | 13.9% |
| 65–74 | 15.1% |
| 75+ | 10.2% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 26.0% |
| Owned outright | 39.0% |
| Rented | 28.3% |
| Vacant | 6.7% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 65.9% |
| Townhome | 0.4% |
| 2–4 units | 14.9% |
| 5–19 units | 5.6% |
| 20+ units | 1.5% |
| Mobile / other | 11.6% |
Businesses in 78648
171 business establishments with 1,639 employees (ZIP Codes Business Patterns 2023).
- Accommodation and Food Services: 27
- Retail Trade: 25
- Other Services (except Public Administration): 23
- Health Care and Social Assistance: 18
- Mining, Quarrying, and Oil and Gas Extraction: 16
- Construction: 12
- Wholesale Trade: 12
- Transportation and Warehousing: 7
EDDM carrier routes
78648 has 7 USPS carrier routes with 3,344 residential and 186 business mailboxes. Open the EDDM route map.
Carrier routes in 78648
78648 has 7 USPS carrier routes (3 city (C), 4 rural (R)) with 3,344 residential and 186 business mailboxes. Routes range from 38 homes (R001) to 811 homes (C002); the median route has 638 homes. The Census counted 3,274 households in 78648 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 2 |
| 250–499 | 1 |
| 500–749 | 3 |
| 750–999 | 1 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 78648 for…
Highest income
For bigger-ticket offers: remodeling, pools, financial planning, private schools.
- Route R002 — Est. median household income $96,382, 639 homes
- Route C001 — Est. median household income $67,543, 638 homes
- Route R004 — Est. median household income $66,868, 432 homes
- Route C003 — Est. median household income $62,505, 133 homes
- Route R003 — Est. median household income $57,191, 653 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 R002 — Est. families with children under 18 45.0%, 639 homes
- Route R004 — Est. families with children under 18 39.2%, 432 homes
- Route R003 — Est. families with children under 18 29.2%, 653 homes
- Route C001 — Est. families with children under 18 27.4%, 638 homes
- Route C003 — Est. families with children under 18 24.2%, 133 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 R002 — Est. owner-occupied homes 87.5%, 639 homes
- Route C001 — Est. owner-occupied homes 80.2%, 638 homes
- Route C003 — Est. owner-occupied homes 75.5%, 133 homes
- Route R004 — Est. owner-occupied homes 73.6%, 432 homes
- Route R003 — Est. owner-occupied homes 71.0%, 653 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 C001 — Est. residents who moved in the past year 26.2%, 638 homes
- Route C003 — Est. residents who moved in the past year 23.7%, 133 homes
- Route C002 — Est. residents who moved in the past year 11.6%, 811 homes
- Route R004 — Est. residents who moved in the past year 7.7%, 432 homes
- Route R003 — Est. residents who moved in the past year 7.0%, 653 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 R003 — Est. homes built 2010 or later 19.8%, 653 homes
- Route R002 — Est. homes built 2010 or later 18.9%, 639 homes
- Route R004 — Est. homes built 2010 or later 16.8%, 432 homes
- Route C002 — Est. homes built 2010 or later 15.4%, 811 homes
- Route C003 — Est. homes built 2010 or later 6.0%, 133 homes
Select these 5 routes on the route map
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C002 — USPS business mailboxes 103, 811 homes
- Route C001 — USPS business mailboxes 50, 638 homes
- Route R003 — USPS business mailboxes 25, 653 homes
- Route R004 — USPS business mailboxes 3, 432 homes
- Route R002 — USPS business mailboxes 2, 639 homes
Select these 5 routes on the route map
Every carrier route in 78648
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C001 | City | 638 | 50 | $67,543 | 80.2% | 27.4% | 26.2% |
| C002 | City | 811 | 103 | $56,370 | 61.8% | 23.3% | 11.6% |
| C003 | City | 133 | 1 | $62,505 | 75.5% | 24.2% | 23.7% |
| R001 | Rural | 38 | 2 | $102,976 | 86.4% | 50.0% | 4.0% |
| R002 | Rural | 639 | 2 | $96,382 | 87.5% | 45.0% | 5.7% |
| R003 | Rural | 653 | 25 | $57,191 | 71.0% | 29.2% | 7.0% |
| R004 | Rural | 432 | 3 | $66,868 | 73.6% | 39.2% | 7.7% |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 78648 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
- 78658 (6.9 mi)
- 78661 (7.5 mi)
- 78638 — Kingsbury city, TX (9.1 mi)
- 78632 — Harwood town, TX (10 mi)
- 78622 (10.4 mi)
- 78644 — Lockhart city, TX (12.5 mi)
- 78670 — Staples city, TX (13.5 mi)
- 78655 — Martindale city, TX (14.5 mi)
Areas that include 78648
- Luling, TX ZIP codes — 1 ZIP code
- Caldwell County ZIP codes — 11 ZIP codes
- Guadalupe County ZIP codes — 12 ZIP codes
- Austin ZIP code map — 89 ZIP codes
- Texas ZIP code data
Where it ranks
- No. 14 of 83: highest median age in the Austin area
- No. 3 of 9: highest share of residents who moved in during the past year in Caldwell County
- No. 4 of 9: highest median age in Caldwell County
Mail every home in 78648
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) 78648, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 78648 in?
- 78648 is a Luling, TX mailing address. By land area, 4% lies inside Luling; the rest is outside any Census-defined city or community.
- What county is 78648 in?
- 78648 is mostly in Caldwell County (76% of its land), with smaller parts in Guadalupe and Gonzales counties.
- What is the population of 78648?
- About 7,863 people (±525), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 8,167.
- What is the median household income in 78648?
- $57,621 (±$5,773), 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 78648?
- 7 USPS carrier routes with 3,344 residential and 186 business mailboxes (3,529 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 78648?
- The closest, measured center to center: 78658 (6.9 mi), 78661 (7.5 mi), 78638 (9.1 mi, Kingsbury), 78632 (10 mi, Harwood), 78622 (10.4 mi) and 78644 (12.5 mi, Lockhart).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.