Round Rock, TX population, income and ZIP codes

Round Rock city is a mid-size city in Texas, with 124,288 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #30 of 1,863 ranked by population — larger than 98% of them. The median age here is 36.2 years against 39.1 nationally, a slightly younger profile than the country as a whole. At this size the Census also publishes one-year estimates; the five-year values used here are steadier and let you compare against smaller neighbours on the same basis.

Households in Round Rock city earn a median of $97,187 a year, 23.7% above the national figure of $78,538 and 50% above the $64,654 median for the 1,008 Texas cities we cover. The median is the midpoint household, not an average, so a handful of very high earners cannot drag it upward the way they distort a mean. Poverty reaches 7.7% of residents here, below the 12.4% national rate.

The typical owner-occupied home in Round Rock city is valued at $383,700, 26.5% above the national figure and 114% above the $179,100 peer median, while median gross rent runs $1,713 a month, 21.8% above the national figure, or roughly $20,556 across a full year. A household on the local median income would put about 21.2% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is within the standard affordability guideline. The home-price-to-income ratio works out to 3.9×, against roughly 3.9× nationally, so buying is easier here than in the average US market. 56.2% of occupied homes are owner-occupied versus 65% nationally, so the market leans more heavily on renters. The rent line includes utilities paid by the tenant, a definition worth remembering when comparing it against a landlord's quoted rate.

All values below were released by the Census for this exact geography, with no gap-filling on our side. Small-area estimates still carry wider margins of error than state or national figures, so check the linked ACS tables before relying on them for lending, appraisal or legal work.