Guadalupe County · Texas
ZIP code 78638
- Population
- 2,064
- Median income
- $82,760
- Median home
- $301,500
- Sales tax
- 6.25%
ZCTA residents
Household, past 12 months
Owner-occupied value
Texas state rate
Quick answer
ZIP 78638 sits in Guadalupe County, Texas and is home to 2,064 people. Median household income is $82,760, the median home is worth $301,500 and median gross rent is $1,252. 83.8% of households own their home, and purchases are taxed at 6.25% (Texas state rate).
- County
- Guadalupe County
- State
- Texas (TX)
- Area codes
- Not published
- Metro area
- Outside covered metros
FIPS 48187
1,989 ZIPs covered
No NANPA match for this ZIP
Rate jurisdiction used for tax
The numbers for 78638
American Community Survey 2019-2023 ACS 5-year estimates for this ZCTA.
- Population
- 2,064ZIP 78638 residents
- Median household income
- $82,760Past 12 months, inflation adjusted
- Median home value
- $301,500Owner-occupied units
- Median gross rent
- $1,252Rent plus utilities, monthly
- Median age
- 43.9 yrsAll residents
- Homeownership rate
- 83.8%Owner-occupied households
Sales tax in 78638
What a purchase inside this ZIP costs at checkout.
Texas levies 6.25% statewide, and counties, cities and special districts inside this ZIP can add their own local rate on top. Check the county page for the local component before you quote a price.
Affordability in this ZIP
Derived from the Census medians above — indicative, not an offer.
A rent burden above 30% is the federal threshold for cost-burdened households, and a price-to-income multiple above 4× is generally considered a stretched housing market. The mortgage figure is principal and interest only — taxes, insurance and HOA dues are extra.
How 78638 compares
ZIP 78638 against the median ZIP in Guadalupe County and across Texas.
| Measure | ZIP 78638 | County median | State median | vs state |
|---|---|---|---|---|
| Median household income | $82,760 | $82,760 | $68,103 | +22% |
| Median home value | $301,500 | $282,000 | $194,900 | +55% |
| Median gross rent | $1,252 | $1,351 | $1,105 | +13% |
| Population | 2,064 | 6,907 | 5,317 | -61% |
Medians are computed across the 7 ZIP areas in Guadalupe County and the 1989 ZIP areas in Texas.
Statewide rank
Where this ZIP places among all 1989 Texas ZIP areas.
- Income
- #504
- Home value
- #354
- Population
- #1,271
richer than 71% of 1,756 state ZIPs
above 79% of 1,705 state ZIPs
larger than 36% of 1,989 state ZIPs
Comparable ZIP codes
Texas ZIP areas with almost the same household income.
Nearby ZIP codes
Other ZIP codes filed under Guadalupe County.
ZIP 78638 questions
Common questions about this ZIP code.
- Where is ZIP code 78638?
- ZIP 78638 lies mostly in Guadalupe County, Texas. County assignment follows the largest share of land area, so a ZIP straddling a county line is filed under its dominant county.
- What sales tax do I pay in 78638?
- Texas charges 6.25% statewide, plus any county, city or district rate that applies locally.
- Is 78638 expensive to live in?
- Median rent runs $1,252 a month, about 18% of median household income, and the median home is worth $301,500 — +55% against the typical Texas ZIP.
- Is a ZCTA the same as a postal ZIP code?
- Not exactly. The Census builds ZIP Code Tabulation Areas from the ZIP codes of addresses inside each census block, so a ZCTA can differ slightly from the USPS delivery route of the same number, and PO-box-only ZIPs have no ZCTA at all.
Keep going
Related pages for this area.
Sources & transparency
- US Census Bureau, ACS 2019-2023 5-year estimates — 2019-2023 ACS 5-year — population, income, housing
- Census 2020 ZCTA-to-county relationship file — County assignment by largest land-area overlap
- Texas Comptroller of Public Accounts — Sales tax rates and local add-ons
Last reviewed December 2024. Figures are published for reference and can change; verify with the source agency before filing or contracting. How we build and check this data.