Working as an Agent in Rockwall County, TX, and Sachse
Short answer. Rockwall County is the smallest county in Texas by area, and it is small enough that its cities spill into their neighbors. Sachse, one of our two areas here, is not in Rockwall County at all. It sits in Collin and Dallas counties.
Rockwall County in numbers
Rockwall County covers 148.9 square miles and had 107,819 residents in the 2020 Census. The county seat is the city of Rockwall.
Small county, blurry edges
Several cities near Rockwall do not sit neatly inside it. Wylie is mostly in Collin County. Royse City is partly in Collin and Hunt counties. Rowlett is mostly in Dallas County. Heath has a small part in Kaufman County.
Agents here cross county lines all the time, sometimes on one street. Look up the county for each address.
Sachse: Collin and Dallas, not Rockwall
Sachse had 27,103 residents in the 2020 Census. The city lies in Collin and Dallas counties. We group it with Rockwall on the form because of where it sits on the map, not because of its county.
Cities on our coverage map here
These are the Rockwall and east areas where we are welcoming agents.
- Rockwall
- Sachse
Agents in Rockwall County
On September 29, 2026, the Texas Real Estate Commission's public license data listed 1,034 active sales agents and 162 active individual brokers with a Rockwall County address on their license record.
This counts license records. It does not show who is working full time or how much business there is, so read it as background, not as a measure of competition. TREC's data has no city field, so we cannot split it by city. The count is for Rockwall County only. Sachse is in Collin and Dallas counties.
Source: TREC Broker and Sales Agent License Holder Information, Texas Open Data Portal
The housing stock in Rockwall and east
| Rockwall County | Sachse | |
|---|---|---|
| Population (5-year estimate) | 123,617 | 30,491 |
| Housing units | 43,580 | 10,862 |
| Homes built since 2010 | 36% | 34% |
| Homes built before 1990 | 7% | 6% |
| Median year built | 2006 | 2005 |
| Owner-occupied homes | 83% | 85% |
| Vacant housing units | 5.4% | 2.4% |
| Median home value | $415,500 | $406,200 |
| Median gross rent | $1,992 | $1,798 |
Source: U.S. Census Bureau, American Community Survey 5-year estimates, 2020 to 2024. These are estimates with margins of error, and 5-year figures lag the newer city estimates quoted elsewhere on this page.
Home sales snapshot, July 2026
These are closed sales of single-family homes in the month, from the multiple listing service, with the same month a year earlier for comparison.
| Rockwall | Sachse | |
|---|---|---|
| Closed sales | 82 | 31 |
| Closed sales, year earlier | 81 | 24 |
| Median price | $526,500 | $420,000 |
| Median price, year earlier | $585,000 | $462,500 |
| Average days on market | 77 | 34 |
| Sold price as share of list price | 93.5% | 96.2% |
| Active listings | 382 | 113 |
| Months of inventory | 5.2 | 5.2 |
- Rockwall: Median price was $526,500, down 10% from a year earlier. Homes sold for 93.5% of list price on average after 77 days on market, and 382 homes were listed, about 5.2 months of supply. As a rough rule of thumb, that is a fairly balanced pace.
- Sachse: Median price was $420,000, down 9% from a year earlier. Homes sold for 96.2% of list price on average after 34 days on market, and 113 homes were listed, about 5.2 months of supply. As a rough rule of thumb, that is a fairly balanced pace.
Source: North Texas Real Estate Information System (NTREIS) single-family MLS data for July 2026, prepared by the Texas Real Estate Research Center at Texas A&M University. One month of data. Small cities have few sales, so figures can swing a lot from month to month. Sales by builders and sales not listed in the NTREIS MLS are not counted. Treat this as background, not a price for any particular home, and check current figures before you quote them.
Where to look it up
Search the property address on the appraisal district site to see which county tax roll it sits on. This area crosses county lines, so check each one that applies.
- Rockwall Central Appraisal District
- Collin Central Appraisal District
- Dallas Central Appraisal District
- School district: use the district's own address lookup for the exact address
Common questions
Is Rockwall the smallest county in Texas?
By area, yes. It covers about 148.9 square miles.
Is Sachse in Rockwall County?
No. Sachse is in Collin and Dallas counties.
Is Wylie in Rockwall County?
Wylie is mostly in Collin County. Part of it reaches into Rockwall County.
Sources
- Rockwall County, Texas (Wikipedia, citing the U.S. Census Bureau)
- Sachse, Texas (Wikipedia, citing the U.S. Census Bureau)
- U.S. Census Bureau, American Community Survey 5-year estimates, 2020 to 2024 (via Census Reporter)
- North Texas Real Estate Information System (NTREIS) single-family MLS data for July 2026, prepared by the Texas Real Estate Research Center at Texas A&M University
Education only. Not legal, tax or financial advice. Population figures are U.S. Census Bureau counts or estimates as reported by the sources above. Confirm licensing and disclosure rules with the Texas Real Estate Commission and your broker.