78108 ZIP Code, Cibolo, TX

78108 is a ZIP code in Cibolo, Texas — mostly in Guadalupe County (87% of its land), with smaller parts in Bexar and Comal counties. It covers 28 square miles of land, centered about 19 miles northeast of downtown San Antonio. The closest ZIP codes are 78154, 78124 and 78150. 49,784 people live here in 15,914 households, more than in 9 of every 10 Texas ZIP codes. At about 1,763 people per square mile it has suburban density, and most homes are owner-occupied (84%). Median household income is $113,004, above the Texas median of $78,476; 44% of households have children under 18.

Quick facts

Key figures

MeasureValue
Residents49,784
Households15,914
Median household income$113,004
Income per person$40,615
Median age35.5
Homeowners83.9%
Median home value$337,600
Median rent$2,171
Bachelor's degree or higher42.2%
Average commute (minutes)32.1
Households with kids under 1844.3%
Moved in the past year10.6%
Below the poverty line4.3%
Broadband internet95.5%
Speak a non-English language at home16.9%

Household income

% of householdsValue
<$10K2.6%
$10–15K1.0%
$15–25K3.4%
$25–35K3.9%
$35–50K6.7%
$50–75K12.7%
$75–100K13.3%
$100–150K22.9%
$150–200K21.0%
$200K+12.4%

Age

% of all residentsValue
<1014.5%
10–1917.3%
20–246.3%
25–3411.0%
35–4416.9%
45–5413.9%
55–649.1%
65–747.0%
75+4.0%

Tenure

% of housing unitsValue
Owned, with mortgage61.8%
Owned outright18.5%
Rented15.3%
Vacant4.3%

Type of building

% of housing unitsValue
Detached house92.4%
Townhome0.4%
2–4 units0.0%
5–19 units0.9%
20+ units2.7%
Mobile / other3.6%

Businesses in 78108

375 business establishments with 3,807 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

78108 has 20 USPS carrier routes with 18,386 residential and 354 business mailboxes. Open the EDDM route map.

Carrier routes in 78108

78108 has 20 USPS carrier routes (20 rural (R)) with 18,386 residential and 354 business mailboxes. Routes range from 789 homes (R007) to 1,127 homes (R010); the median route has 903 homes. The Census counted 15,914 households in 78108 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2490
250–4990
500–7490
750–99917
1,000–1,4993
1,500+0

Best routes in 78108 for…

Highest income

For bigger-ticket offers: remodeling, pools, financial planning, private schools.

  1. Route R008 — Est. median household income $143,829, 881 homes
  2. Route R009 — Est. median household income $139,580, 925 homes
  3. Route R011 — Est. median household income $136,908, 971 homes
  4. Route R014 — Est. median household income $134,267, 922 homes
  5. Route R010 — Est. median household income $134,238, 1,127 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.

  1. Route R016 — Est. families with children under 18 53.7%, 879 homes
  2. Route R017 — Est. families with children under 18 52.3%, 1,016 homes
  3. Route R007 — Est. families with children under 18 51.4%, 789 homes
  4. Route R018 — Est. families with children under 18 49.6%, 1,029 homes
  5. Route R013 — Est. families with children under 18 49.4%, 945 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.

  1. Route R008 — Est. owner-occupied homes 96.6%, 881 homes
  2. Route R009 — Est. owner-occupied homes 96.0%, 925 homes
  3. Route R006 — Est. owner-occupied homes 90.0%, 851 homes
  4. Route R011 — Est. owner-occupied homes 88.2%, 971 homes
  5. Route R012 — Est. owner-occupied homes 88.1%, 911 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.

  1. Route R007 — Est. residents who moved in the past year 21.1%, 789 homes
  2. Route R018 — Est. residents who moved in the past year 20.6%, 1,029 homes
  3. Route R016 — Est. residents who moved in the past year 18.0%, 879 homes
  4. Route R012 — Est. residents who moved in the past year 16.0%, 911 homes
  5. Route R015 — Est. residents who moved in the past year 15.1%, 895 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.

  1. Route R016 — Est. homes built 2010 or later 61.9%, 879 homes
  2. Route R018 — Est. homes built 2010 or later 60.7%, 1,029 homes
  3. Route R012 — Est. homes built 2010 or later 60.6%, 911 homes
  4. Route R017 — Est. homes built 2010 or later 59.7%, 1,016 homes
  5. Route R007 — Est. homes built 2010 or later 57.4%, 789 homes

Select these 5 routes on the route map

Most businesses

For B2B offers: office supplies, cleaning, IT, catering and commercial services.

  1. Route R019 — USPS business mailboxes 155, 967 homes
  2. Route R003 — USPS business mailboxes 50, 864 homes
  3. Route R001 — USPS business mailboxes 50, 852 homes
  4. Route R015 — USPS business mailboxes 27, 895 homes
  5. Route R010 — USPS business mailboxes 25, 1,127 homes

Select these 5 routes on the route map

Every carrier route in 78108

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
R001Rural85250$80,80074.5%37.1%11.9%
R002Rural8872$89,04084.7%38.6%4.7%
R003Rural86450$68,84264.5%33.9%12.2%
R004Rural8740$100,86681.5%45.8%9.0%
R005Rural9844$122,28784.7%34.4%10.8%
R006Rural8510$124,09690.0%33.7%10.5%
R007Rural7890$119,76778.9%51.4%21.1%
R008Rural8810$143,82996.6%45.1%5.4%
R009Rural92514$139,58096.0%35.1%5.7%
R010Rural1,12725$134,23881.5%46.2%7.0%
R011Rural9711$136,90888.2%45.8%5.9%
R012Rural9112$116,59688.1%40.1%16.0%
R013Rural94517$94,99881.0%49.4%8.4%
R014Rural9224$134,26772.0%39.0%10.7%
R015Rural89527$118,41884.1%46.0%15.1%
R016Rural8790$113,80374.0%53.7%18.0%
R017Rural1,0160$124,75582.0%52.3%11.9%
R018Rural1,0292$121,26080.4%49.6%20.6%
R019Rural967155$51,53655.3%24.3%11.6%
R020Rural8171$88,13085.3%44.2%2.7%

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 78108 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

Areas that include 78108

Where it ranks

Mail every home in 78108

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) 78108, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 78108 in?
78108 is a Cibolo, TX mailing address. By land area, 63% lies inside Cibolo and 19% lies inside Schertz; the rest is outside any Census-defined city or community.
What county is 78108 in?
78108 is mostly in Guadalupe County (87% of its land), with smaller parts in Bexar and Comal counties.
What is the population of 78108?
About 49,784 people (±1,696), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 44,079.
What is the median household income in 78108?
$113,004 (±$6,140), 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 78108?
20 USPS carrier routes with 18,386 residential and 354 business mailboxes (18,743 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 78108?
The closest, measured center to center: 78154 (3.1 mi, Schertz), 78124 (4.4 mi, Zuehl), 78150 (4.4 mi, Randolph AFB), 78148 (5.1 mi, Universal City), 78109 (7.8 mi, Converse) and 78233 (8.8 mi, San Antonio).

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.