What these figures can, and cannot, tell you
Local surveillance shows where public-health teams found mosquito activity, while the national housing survey shows how common indoor rodent signs are across U.S. homes. Neither measure predicts what is happening at one address. They are useful context for deciding when prevention, inspection, or a professional conversation makes sense.
15.7 million
U.S. homes reported signs of mice or rats
The 2023 American Housing Survey counted occupied homes where residents had seen signs of mice or rats indoors during the prior 12 months.
Source: U.S. Census Bureau and U.S. Department of Housing and Urban Development, 2023 ↗133.2 million
Occupied homes were counted in the same survey
That national total puts the reported rodent-sign figure in context. These are household survey results, not a count of pest-control visits.
Source: U.S. Census Bureau and U.S. Department of Housing and Urban Development, 2023 ↗720
Mosquito traps tested positive for West Nile virus in Dallas County
Dallas County Health and Human Services reported this total for the 2024 season, with results posted through November 12, 2024.
Source: Dallas County Health and Human Services, 2024 ↗718
Positive mosquito pools were reported in Dallas County
The county lists positive pools separately from positive traps. Both measures show why standing-water prevention matters during mosquito season.
Source: Dallas County Health and Human Services, 2024 ↗37
Human West Nile disease cases were reported in Dallas County
Dallas County Health and Human Services reported 37 human cases and three deaths for the 2024 season in its 2025 season update.
Source: Dallas County Health and Human Services, July 31, 2025 ↗Putting the data to work
Practical prevention still starts at the property.
For rodents, the Centers for Disease Control and Prevention advises checking for droppings and gnaw marks and addressing activity before rodents become established indoors. For mosquito season, Dallas County recommends draining standing water and using appropriate bite prevention. Local data can make the need for prevention clearer, but a useful response is still tailored to the building, the season, and the signs you are seeing.
If you are seeing pest activity around a Dallas-Fort Worth home or business, EBI's pest-control team can help you sort out a practical next step. For specific rodent concerns, see our Dallas rodent-control guide.
Read the CDC's rodent-control guidance ↗Methodology and sources
How this reference is maintained
EBI selected figures from public agencies that clearly identify their data year, method, or surveillance period. The two U.S. housing figures come from the 2023 American Housing Survey, sponsored by the U.S. Department of Housing and Urban Development and conducted by the U.S. Census Bureau. Dallas County figures come from the county's published West Nile surveillance pages and season update.
- American Housing Survey, Housing Quality infographic, 2023 ↗
- Dallas County West Nile Virus Watch, 2024 season ↗
- Dallas County West Nile season update, July 2025 ↗
- CDC guidance on controlling wild rodent infestations, April 2024 ↗
We review this page roughly monthly during mosquito season and whenever a cited agency publishes newer comparable information. Older figures stay labeled with their original reporting period until a newer source replaces them.
Cite this page
EBI Home Services. “Dallas-Fort Worth Pest & Mosquito Statistics.” Updated October 8, 2026. https://ebihomeservices.com/dallas-pest-statistics