Union Valley is a city in Rockwall County, Texas, home to about 751 people across 2.5 square miles. It has no ZIP code of its own: it’s part of 75189.
Homes sold for a median of $159 per square foot in the three months ending August 2026, a buyer’s market.
Mostly Royse City; part is in Union Valley
Each card is that ZIP code’s whole market, including any part outside Union Valley. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Union Valley’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Dallas Love Field (DAL)29 miles away |
|---|---|
| Nearest city of 250,000+ | Plano, TX23 miles away |
| Nearest city of 1 million+ | Dallas, TX26 miles away |
Straight-line distances from the center of Union Valley; 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.
Union Valley had 370 residents in the 2020 census, up 21% since 2010.
It’s the 1124th largest of 1,778 towns in Texas by population.
Rockwall County grew from 8,531 residents in 1900 to 107,819 in 2020.
Rockwall County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 93°F in summer, and winter lows average 34°F. About 39.8 inches of rain and melted snow fall in a typical year, with about 0 inches of snow.
Source: NOAA 1991–2020 climate normals, Lavon Dam, TX weather station (9 miles away).
35,020 jobs at 2,986 businesses in Rockwall County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
113 doctors and other health care providers list an office in Union Valley.
Nearest hospitals
Providers with an office here
| Primary care doctors | 9 |
|---|---|
| Specialist doctors | 2 |
| Dentists | 10 |
| Nurse practitioners and physician assistants | 35 |
| Mental health providers | 37 |
| Physical and occupational therapists | 14 |
| Optometrists | 2 |
| Chiropractors | 4 |
| Pharmacies | 9 |
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)
Grocery stores
Pharmacies
Libraries
Museums
Counts are within about 1.5 miles 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 Royse City ISD, Community ISD, Pioneer Technology & Arts Academy. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Anita Scott ElRoyse City | Pre-K–5 | 548 | Public | 1.4 mi |
| Davis ElRoyse City | Pre-K–5 | 616 | Public | 3.0 mi |
| Glenda Arnold Early Childhood Learning CenterRoyse City | Pre-K | 393 | Public | 2.9 mi |
| Harry Herndon ElRoyse City | Pre-K–5 | 550 | Public | 1.9 mi |
| John & Barbara Roderick ElRoyse City | Pre-K–5 | 663 | Public | 6.9 mi |
| Paula Walker ElRoyse City | Pre-K–5 | 479 | Public | 3.5 mi |
| Ruth Cherry ElRoyse City | Pre-K–5 | 772 | Public | 2.9 mi |
| W R (Bill) Fort ElRoyse City | Pre-K–5 | 762 | Public | 3.7 mi |
| Pioneer Technology (Ptaa) Royse City ElRoyse City | K–4 | 194 | Charter | 1.9 mi |
| Ouida Baley MiddleRoyse City | 6–8 | 1,224 | Public | 3.2 mi |
| Royse City H SRoyse City | 9–12 | 2,834 | Public | 4.3 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| VandermontRoyse City | K–12 | 78 | Christian (no specific denomination) | 4.0 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Royse City, Fate and Rockwall.
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.