78124 ZIP Code, Marion, TX
78124 is a ZIP code in Marion, Texas — mostly in Guadalupe County (88% of its land), with smaller parts in Bexar County. It covers 57 square miles of land, centered about 23 miles northeast of downtown San Antonio. The closest ZIP codes are 78108, 78154 and 78123. 6,157 people live here in 2,378 households. With about 108 people per square mile it is lightly settled, and most homes are owner-occupied (84%). Median household income is $74,192, close to the Texas median of $78,476; the median age is 46.6, older than most ZIP codes.
Quick facts
- Mailing city: Marion, TX
- County: Guadalupe County
- Metro area: San Antonio
- Land area: 57 sq mi
- Population: 6,157
- Median household income: $74,192
- Carrier routes: 5 (3,954 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 6,157 |
| Households | 2,378 |
| Median household income | $74,192 |
| Income per person | $42,529 |
| Median age | 46.6 |
| Homeowners | 83.5% |
| Median home value | $282,700 |
| Median rent | $1,356 |
| Bachelor's degree or higher | 24.4% |
| Average commute (minutes) | 33.6 |
| Households with kids under 18 | 29.3% |
| Moved in the past year | 16.4% |
| Below the poverty line | 8.5% |
| Broadband internet | 93.4% |
| Speak a non-English language at home | 17.4% |
Household income
| % of households | Value |
|---|---|
| <$10K | 2.7% |
| $10–15K | 2.6% |
| $15–25K | 5.5% |
| $25–35K | 4.2% |
| $35–50K | 11.5% |
| $50–75K | 25.7% |
| $75–100K | 11.0% |
| $100–150K | 11.8% |
| $150–200K | 8.2% |
| $200K+ | 16.7% |
Age
| % of all residents | Value |
|---|---|
| <10 | 9.3% |
| 10–19 | 11.7% |
| 20–24 | 3.7% |
| 25–34 | 10.5% |
| 35–44 | 13.1% |
| 45–54 | 14.9% |
| 55–64 | 17.5% |
| 65–74 | 9.9% |
| 75+ | 9.2% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 34.7% |
| Owned outright | 42.0% |
| Rented | 15.0% |
| Vacant | 8.3% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 64.2% |
| Townhome | 0.3% |
| 2–4 units | 4.9% |
| 5–19 units | 0.0% |
| 20+ units | 0.4% |
| Mobile / other | 30.2% |
Businesses in 78124
119 business establishments with 1,845 employees (ZIP Codes Business Patterns 2023).
- Construction: 28
- Retail Trade: 15
- Wholesale Trade: 11
- Other Services (except Public Administration): 10
- Transportation and Warehousing: 9
- Manufacturing: 8
- Administrative and Support and Waste Management and Remediation Services: 8
- Professional, Scientific, and Technical Services: 7
EDDM carrier routes
78124 has 5 USPS carrier routes with 3,954 residential and 144 business mailboxes. Open the EDDM route map.
Carrier routes in 78124
78124 has 5 USPS carrier routes (5 rural (R)) with 3,954 residential and 144 business mailboxes. Routes range from 514 homes (R002) to 1,277 homes (R006); the median route has 732 homes. The Census counted 2,378 households in 78124 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 0 |
| 500–749 | 3 |
| 750–999 | 1 |
| 1,000–1,499 | 1 |
| 1,500+ | 0 |
Best routes in 78124 for…
Highest income
For bigger-ticket offers: remodeling, pools, financial planning, private schools.
- Route R001 — Est. median household income $118,055, 732 homes
- Route R006 — Est. median household income $93,279, 1,277 homes
- Route R002 — Est. median household income $92,887, 514 homes
- Route R003 — Est. median household income $80,621, 662 homes
- Route R005 — Est. median household income $77,672, 769 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 R006 — Est. families with children under 18 38.4%, 1,277 homes
- Route R005 — Est. families with children under 18 36.9%, 769 homes
- Route R003 — Est. families with children under 18 36.8%, 662 homes
- Route R001 — Est. families with children under 18 31.9%, 732 homes
- Route R002 — Est. families with children under 18 29.5%, 514 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 R003 — Est. owner-occupied homes 89.6%, 662 homes
- Route R005 — Est. owner-occupied homes 88.0%, 769 homes
- Route R001 — Est. owner-occupied homes 87.7%, 732 homes
- Route R006 — Est. owner-occupied homes 83.2%, 1,277 homes
- Route R002 — Est. owner-occupied homes 82.8%, 514 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 R003 — Est. residents who moved in the past year 17.2%, 662 homes
- Route R005 — Est. residents who moved in the past year 14.3%, 769 homes
- Route R001 — Est. residents who moved in the past year 13.2%, 732 homes
- Route R006 — Est. residents who moved in the past year 12.9%, 1,277 homes
- Route R002 — Est. residents who moved in the past year 10.5%, 514 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 R001 — Est. homes built 2010 or later 49.6%, 732 homes
- Route R002 — Est. homes built 2010 or later 42.2%, 514 homes
- Route R006 — Est. homes built 2010 or later 41.6%, 1,277 homes
- Route R005 — Est. homes built 2010 or later 30.1%, 769 homes
- Route R003 — Est. homes built 2010 or later 26.0%, 662 homes
Select these 5 routes on the route map
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route R002 — USPS business mailboxes 77, 514 homes
- Route R003 — USPS business mailboxes 35, 662 homes
- Route R005 — USPS business mailboxes 16, 769 homes
- Route R001 — USPS business mailboxes 16, 732 homes
Select these 4 routes on the route map
Every carrier route in 78124
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| R001 | Rural | 732 | 16 | $118,055 | 87.7% | 31.9% | 13.2% |
| R002 | Rural | 514 | 77 | $92,887 | 82.8% | 29.5% | 10.5% |
| R003 | Rural | 662 | 35 | $80,621 | 89.6% | 36.8% | 17.2% |
| R005 | Rural | 769 | 16 | $77,672 | 88.0% | 36.9% | 14.3% |
| R006 | Rural | 1,277 | 0 | $93,279 | 83.2% | 38.4% | 12.9% |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 78124 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
- 78108 — Cibolo city, TX (4.4 mi)
- 78154 — Schertz city, TX (7 mi)
- 78123 — McQueeney CDP, TX (7.3 mi)
- 78150 — Randolph AFB CDP, TX (8.2 mi)
- 78148 — Universal City city, TX (9 mi)
- 78152 — St. Hedwig town, TX (9.5 mi)
- 78109 — Converse city, TX (10.4 mi)
- 78130 — New Braunfels city, TX (10.5 mi)
Areas that include 78124
- Cibolo, TX ZIP codes — 2 ZIP codes
- Marion, TX ZIP codes — 1 ZIP code
- New Berlin, TX ZIP codes — 3 ZIP codes
- Santa Clara, TX ZIP codes — 1 ZIP code
- Zuehl, TX ZIP codes — 2 ZIP codes
- Bexar County ZIP codes — 76 ZIP codes
- Guadalupe County ZIP codes — 12 ZIP codes
- San Antonio ZIP code map — 121 ZIP codes
- Texas ZIP code data
Where it ranks
- No. 12 of 104: highest median age in the San Antonio area
- No. 4 of 11: highest share of owner-occupied homes in Guadalupe County
- No. 3 of 11: highest share of residents who moved in during the past year in Guadalupe County
- No. 2 of 11: highest median age in Guadalupe County
Mail every home in 78124
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) 78124, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 78124 in?
- 78124 is a Marion, TX mailing address. By land area, 8% lies inside Zuehl, 5% lies inside Cibolo, 4% lies inside Santa Clara and 2% lies inside New Berlin; the rest is outside any Census-defined city or community.
- What county is 78124 in?
- 78124 is mostly in Guadalupe County (88% of its land), with smaller parts in Bexar County.
- What is the population of 78124?
- About 6,157 people (±840), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 6,860.
- What is the median household income in 78124?
- $74,192 (±$9,459), 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 78124?
- 5 USPS carrier routes with 3,954 residential and 144 business mailboxes (4,100 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 78124?
- The closest, measured center to center: 78108 (4.4 mi, Cibolo), 78154 (7 mi, Schertz), 78123 (7.3 mi, McQueeney), 78150 (8.2 mi, Randolph AFB), 78148 (9 mi, Universal City) and 78152 (9.5 mi, St. Hedwig).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.