
Capt. Nelson Merrell House · National Register of Historic Places
Round Rock’s story
175 years in pictures
Census counts: 628 in 1880, a low of 628 in 1880, 119,468 in 2020. The archive holds 6 old photos and papers going back to 1980 and 2 maps from 1951 on.
4 places on the National Register of Historic Places.
- 1851Round Rock is settled
Explore the history →
Getting set upMoving to Round Rock: who provides what
Who provides power, water and the rest in Round Rock, and how to reach them.
The full setup list →EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Nov 18, 2024.