78643 ZIP Code, Llano, TX
78643 is a ZIP code in Llano, Texas in Llano County. It covers 712 square miles of land. The closest ZIP codes are 76885, 76831 and 78639. 7,088 people live here in 3,188 households. It is rural, with fewer than 100 people per square mile, and most homes are owner-occupied (75%). Median household income is $68,365, below the Texas median of $78,476; the median age is 54.5, older than most ZIP codes.
Quick facts
- Mailing city: Llano, TX
- County: Llano County
- Land area: 712 sq mi
- Population: 7,088
- Median household income: $68,365
- Carrier routes: 9 (3,597 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 7,088 |
| Households | 3,188 |
| Median household income | $68,365 |
| Income per person | $44,187 |
| Median age | 54.5 |
| Homeowners | 74.7% |
| Median home value | $362,600 |
| Median rent | $1,077 |
| Bachelor's degree or higher | 33.4% |
| Average commute (minutes) | 23.3 |
| Households with kids under 18 | 23.6% |
| Moved in the past year | 15.8% |
| Below the poverty line | 9.9% |
| Broadband internet | 89.3% |
| Speak a non-English language at home | 5.6% |
Household income
| % of households | Value |
|---|---|
| <$10K | 3.3% |
| $10–15K | 2.5% |
| $15–25K | 7.3% |
| $25–35K | 12.4% |
| $35–50K | 12.3% |
| $50–75K | 15.8% |
| $75–100K | 8.1% |
| $100–150K | 20.9% |
| $150–200K | 5.5% |
| $200K+ | 12.0% |
Age
| % of all residents | Value |
|---|---|
| <10 | 8.5% |
| 10–19 | 11.1% |
| 20–24 | 4.2% |
| 25–34 | 9.4% |
| 35–44 | 9.7% |
| 45–54 | 7.6% |
| 55–64 | 14.5% |
| 65–74 | 21.6% |
| 75+ | 13.4% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 26.6% |
| Owned outright | 30.6% |
| Rented | 18.6% |
| Vacant | 24.2% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 80.6% |
| Townhome | 1.6% |
| 2–4 units | 5.2% |
| 5–19 units | 1.3% |
| 20+ units | 1.0% |
| Mobile / other | 10.3% |
Businesses in 78643
212 business establishments with 1,542 employees (ZIP Codes Business Patterns 2023).
- Retail Trade: 35
- Construction: 34
- Accommodation and Food Services: 24
- Health Care and Social Assistance: 20
- Other Services (except Public Administration): 20
- Professional, Scientific, and Technical Services: 19
- Real Estate and Rental and Leasing: 15
- Finance and Insurance: 12
EDDM carrier routes
78643 has 9 USPS carrier routes with 3,597 residential and 289 business mailboxes. Open the EDDM route map.
Carrier routes in 78643
78643 has 9 USPS carrier routes (3 city (C), 6 highway contract (H)) with 3,597 residential and 289 business mailboxes. Routes range from 39 homes (H011) to 816 homes (H006); the median route has 406 homes. The Census counted 3,188 households in 78643 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 3 |
| 250–499 | 2 |
| 500–749 | 3 |
| 750–999 | 1 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 78643 for…
Highest income
For bigger-ticket offers: remodeling, pools, financial planning, private schools.
- Route H010 — Est. median household income $105,016, 617 homes
- Route H007 — Est. median household income $97,292, 601 homes
- Route H006 — Est. median household income $91,162, 816 homes
- Route H008 — Est. median household income $90,452, 293 homes
- Route C002 — Est. median household income $58,635, 406 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 C001 — Est. families with children under 18 31.8%, 567 homes
- Route C003 — Est. families with children under 18 31.7%, 154 homes
- Route H010 — Est. families with children under 18 28.3%, 617 homes
- Route C002 — Est. families with children under 18 25.4%, 406 homes
- Route H008 — Est. families with children under 18 21.2%, 293 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 H007 — Est. owner-occupied homes 87.5%, 601 homes
- Route H006 — Est. owner-occupied homes 84.1%, 816 homes
- Route H008 — Est. owner-occupied homes 79.1%, 293 homes
- Route H010 — Est. owner-occupied homes 78.6%, 617 homes
- Route C002 — Est. owner-occupied homes 76.3%, 406 homes
Select these 5 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 H007 — Est. homes built 2010 or later 22.1%, 601 homes
- Route C002 — Est. homes built 2010 or later 19.1%, 406 homes
- Route H010 — Est. homes built 2010 or later 17.6%, 617 homes
- Route H008 — Est. homes built 2010 or later 16.8%, 293 homes
- Route H006 — Est. homes built 2010 or later 14.2%, 816 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 157, 406 homes
- Route C001 — USPS business mailboxes 45, 567 homes
- Route C003 — USPS business mailboxes 29, 154 homes
- Route H006 — USPS business mailboxes 22, 816 homes
- Route H010 — USPS business mailboxes 12, 617 homes
Select these 5 routes on the route map
Every carrier route in 78643
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C001 | City | 567 | 45 | $48,260 | 63.0% | 31.8% | — |
| C002 | City | 406 | 157 | $58,635 | 76.3% | 25.4% | — |
| C003 | City | 154 | 29 | $48,225 | 64.7% | 31.7% | — |
| H006 | Highway contract | 816 | 22 | $91,162 | 84.1% | 15.7% | — |
| H007 | Highway contract | 601 | 3 | $97,292 | 87.5% | 18.9% | — |
| H008 | Highway contract | 293 | 12 | $90,452 | 79.1% | 21.2% | — |
| H010 | Highway contract | 617 | 12 | $105,016 | 78.6% | 28.3% | — |
| H011 | Highway contract | 39 | 0 | $89,444 | 91.1% | 11.9% | — |
| H012 | Highway contract | 104 | 9 | $87,999 | 90.7% | 12.2% | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 78643 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
- 76885 (15.1 mi)
- 76831 (15.4 mi)
- 78639 — Kingsland CDP, TX (15.5 mi)
- 78609 — Buchanan Dam CDP, TX (16.3 mi)
- 78607 — Buchanan Dam CDP, TX (16.6 mi)
- 78675 (16.9 mi)
- 78672 — Tow CDP, TX (19.4 mi)
- 76832 (19.7 mi)
Areas that include 78643
- Llano, TX ZIP codes — 1 ZIP code
- Sunrise Beach Village, TX ZIP codes — 1 ZIP code
- Llano County ZIP codes — 9 ZIP codes
- Texas ZIP code data
Mail every home in 78643
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) 78643, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 78643 in?
- 78643 is a Llano, TX mailing address. None of its land lies inside a Census-defined city or community.
- What county is 78643 in?
- 78643 is in Llano County.
- What is the population of 78643?
- About 7,088 people (±482), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 6,453.
- What is the median household income in 78643?
- $68,365 (±$14,010), 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 78643?
- 9 USPS carrier routes with 3,597 residential and 289 business mailboxes (3,886 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 78643?
- The closest, measured center to center: 76885 (15.1 mi), 76831 (15.4 mi), 78639 (15.5 mi, Kingsland), 78609 (16.3 mi, Buchanan Dam), 78607 (16.6 mi, Buchanan Dam) and 78675 (16.9 mi).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.