Dilley is a city in Frio County, Texas, home to about 3,769 people across 2.3 square miles. Its ZIP code is 78017.
Mostly Dilley; also Hilltop (Frio County)
We’re writing up Dilley’s story and what everyday life there is like, for people thinking about moving in.
Are you a local agent who knows Dilley well? Agents who advertise here will be able to write the guide. Advertise on OfferBacked
| Nearest major airport | San Antonio International Airport (SAT)73 miles away |
|---|---|
| Nearest city of 250,000+ | San Antonio, TX67 miles away |
Straight-line distances from the center of Dilley; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Dilley had 3,274 residents in the 2020 census, down 11% since 2000.
It’s the 504th largest of 1,778 towns in Texas by population.
Frio County grew from 4,200 residents in 1900 to 18,385 in 2020.
Frio County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 98°F in summer, and winter lows average 42°F. About 25.1 inches of rain and melted snow fall in a typical year, with about 0 inches of snow.
Source: NOAA 1991–2020 climate normals, Dilley, TX weather station (about a mile away).
4,949 jobs at 295 businesses in Frio County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
10 doctors and other health care providers list an office in Dilley.
Nearest hospitals
Providers with an office here
| Primary care doctors | 2 |
|---|---|
| Dentists | 1 |
| Nurse practitioners and physician assistants | 6 |
| Mental health providers | 1 |
| Pharmacies | 1 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (1 nearby)
Counts are within about 1 mile of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Dilley ISD. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Dilley ElDilley | Pre-K–5 | 402 | Public | 0.3 mi |
| Mary Harper MiddleDilley | 6–8 | 181 | Public | 0.2 mi |
| Dilley H SDilley | 9–12 | 258 | Public | 0.2 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
Buying or selling around Dilley? Tell us what you need and when. No agents advertise here yet, so we’ll keep your request for up to 30 days and send it to local agents who join. No obligation, and you choose who to work with.
Loading map…
Shares ZIP codes with Hilltop (Frio County).
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.