78657 ZIP Code, Horseshoe Bay, TX
78657 is a ZIP code in Horseshoe Bay, Texas — mostly in Llano County (69% of its land), with smaller parts in Burnet County. It covers 39 square miles of land. The closest ZIP codes are 78663, 78639 and 78654. 7,591 people live here in 3,526 households. With about 196 people per square mile it is lightly settled, and most homes are owner-occupied (81%). Median household income is $91,452, above the Texas median of $78,476; the median age is 59.3, older than most ZIP codes.
Quick facts
- Mailing city: Horseshoe Bay, TX
- County: Llano County
- Land area: 39 sq mi
- Population: 7,591
- Median household income: $91,452
- Carrier routes: 7 (4,541 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 7,591 |
| Households | 3,526 |
| Median household income | $91,452 |
| Income per person | $68,540 |
| Median age | 59.3 |
| Homeowners | 81.3% |
| Median home value | $483,200 |
| Median rent | $1,492 |
| Bachelor's degree or higher | 42.9% |
| Average commute (minutes) | 25.2 |
| Households with kids under 18 | 16.0% |
| Moved in the past year | 10.3% |
| Below the poverty line | 4.9% |
| Broadband internet | 94.9% |
| Speak a non-English language at home | 13.6% |
Household income
| % of households | Value |
|---|---|
| <$10K | 1.7% |
| $10–15K | 1.6% |
| $15–25K | 8.3% |
| $25–35K | 4.0% |
| $35–50K | 11.3% |
| $50–75K | 14.9% |
| $75–100K | 13.1% |
| $100–150K | 17.5% |
| $150–200K | 11.3% |
| $200K+ | 16.3% |
Age
| % of all residents | Value |
|---|---|
| <10 | 7.9% |
| 10–19 | 7.8% |
| 20–24 | 2.4% |
| 25–34 | 9.5% |
| 35–44 | 7.6% |
| 45–54 | 8.7% |
| 55–64 | 18.4% |
| 65–74 | 19.6% |
| 75+ | 18.2% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 26.6% |
| Owned outright | 26.6% |
| Rented | 12.3% |
| Vacant | 34.5% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 68.4% |
| Townhome | 12.3% |
| 2–4 units | 6.6% |
| 5–19 units | 5.9% |
| 20+ units | 0.7% |
| Mobile / other | 6.2% |
Businesses in 78657
188 business establishments with 1,825 employees (ZIP Codes Business Patterns 2023).
- Construction: 41
- Professional, Scientific, and Technical Services: 27
- Real Estate and Rental and Leasing: 22
- Finance and Insurance: 20
- Retail Trade: 16
- Other Services (except Public Administration): 12
- Health Care and Social Assistance: 11
- Accommodation and Food Services: 9
EDDM carrier routes
78657 has 7 USPS carrier routes with 4,541 residential and 91 business mailboxes. Open the EDDM route map.
Carrier routes in 78657
78657 has 7 USPS carrier routes (7 highway contract (H)) with 4,541 residential and 91 business mailboxes. Routes range from 335 homes (H013) to 1,057 homes (H005); the median route has 631 homes. The Census counted 3,526 households in 78657 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 2 |
| 500–749 | 4 |
| 750–999 | 0 |
| 1,000–1,499 | 1 |
| 1,500+ | 0 |
Best routes in 78657 for…
Highest income
For bigger-ticket offers: remodeling, pools, financial planning, private schools.
- Route H013 — Est. median household income $115,304, 335 homes
- Route H007 — Est. median household income $113,469, 714 homes
- Route H003 — Est. median household income $104,594, 489 homes
- Route H005 — Est. median household income $101,093, 1,057 homes
- Route H009 — Est. median household income $89,008, 694 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 H001 — Est. families with children under 18 40.2%, 631 homes
- Route H011 — Est. families with children under 18 18.3%, 621 homes
- Route H007 — Est. families with children under 18 15.8%, 714 homes
- Route H003 — Est. families with children under 18 15.7%, 489 homes
- Route H013 — Est. families with children under 18 13.2%, 335 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 H013 — Est. owner-occupied homes 94.5%, 335 homes
- Route H007 — Est. owner-occupied homes 93.2%, 714 homes
- Route H003 — Est. owner-occupied homes 88.6%, 489 homes
- Route H005 — Est. owner-occupied homes 83.2%, 1,057 homes
- Route H009 — Est. owner-occupied homes 75.4%, 694 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 H001 — Est. homes built 2010 or later 33.4%, 631 homes
- Route H011 — Est. homes built 2010 or later 28.5%, 621 homes
- Route H007 — Est. homes built 2010 or later 27.3%, 714 homes
- Route H003 — Est. homes built 2010 or later 26.0%, 489 homes
- Route H013 — Est. homes built 2010 or later 24.3%, 335 homes
Select these 5 routes on the route map
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route H011 — USPS business mailboxes 42, 621 homes
- Route H005 — USPS business mailboxes 19, 1,057 homes
- Route H001 — USPS business mailboxes 14, 631 homes
- Route H003 — USPS business mailboxes 10, 489 homes
- Route H007 — USPS business mailboxes 4, 714 homes
Select these 5 routes on the route map
Every carrier route in 78657
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| H001 | Highway contract | 631 | 14 | $67,619 | 71.1% | 40.2% | — |
| H003 | Highway contract | 489 | 10 | $104,594 | 88.6% | 15.7% | — |
| H005 | Highway contract | 1,057 | 19 | $101,093 | 83.2% | 6.4% | — |
| H007 | Highway contract | 714 | 4 | $113,469 | 93.2% | 15.8% | — |
| H009 | Highway contract | 694 | 2 | $89,008 | 75.4% | 6.2% | — |
| H011 | Highway contract | 621 | 42 | $76,652 | 66.7% | 18.3% | — |
| H013 | Highway contract | 335 | 0 | $115,304 | 94.5% | 13.2% | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 78657 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
- 78663 — Round Mountain town, TX (9.1 mi)
- 78639 — Kingsland CDP, TX (9.7 mi)
- 78654 — Marble Falls city, TX (10.3 mi)
- 78636 — Johnson City city, TX (15.2 mi)
- 78609 — Buchanan Dam CDP, TX (15.4 mi)
- 78669 — Briarcliff village, TX (16.4 mi)
- 78611 — Burnet city, TX (19.3 mi)
- 78675 (20.7 mi)
Areas that include 78657
- Horseshoe Bay, TX ZIP codes — 1 ZIP code
- Cottonwood Shores, TX ZIP codes — 1 ZIP code
- Burnet County ZIP codes — 10 ZIP codes
- Llano County ZIP codes — 9 ZIP codes
- Texas ZIP code data
Mail every home in 78657
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) 78657, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 78657 in?
- 78657 is a Horseshoe Bay, TX mailing address. By land area, 37% lies inside Horseshoe Bay, 3% lies inside Cottonwood Shores and 3% lies inside Marble Falls; the rest is outside any Census-defined city or community.
- What county is 78657 in?
- 78657 is mostly in Llano County (69% of its land), with smaller parts in Burnet County.
- What is the population of 78657?
- About 7,591 people (±472), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 6,531.
- What is the median household income in 78657?
- $91,452 (±$8,300), 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 78657?
- 7 USPS carrier routes with 4,541 residential and 91 business mailboxes (4,632 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 78657?
- The closest, measured center to center: 78663 (9.1 mi, Round Mountain), 78639 (9.7 mi, Kingsland), 78654 (10.3 mi, Marble Falls), 78636 (15.2 mi, Johnson City), 78609 (15.4 mi, Buchanan Dam) and 78669 (16.4 mi, Briarcliff).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.