Texas

Distance from Austin to Round Rock

Straight-line distance

16.6mi

Austin, TX and Round Rock, TX are 16.6 miles (26.8 km) apart in a straight line. From Austin, the shortest path starts out heading NNE (19°).

kilometers
26.8
nautical miles
14.4
heading from Austin
19° NNE
heading from Round Rock
199° SSW
AustinRound Rock

Orange line: great-circle path · ring: midpoint · thin lines: county borders

How far Austin is from Round Rock

The great-circle distance between the Census internal points of Austin and Round Rock is 16.6 miles, 26.8 km or 14.4 nautical miles. That is the shortest path over the Earth's surface, computed with the haversine formula on a sphere with the mean Earth radius, 6,371.0 km. A course held on one compass bearing (a rhumb line) would be 16.6 miles, practically the same at this range.

Measurements

Miles
16.6
Kilometers
26.8
Nautical miles
14.4
Bearing from Austin
18.9° NNE
Bearing arriving at Round Rock
19.0°
Bearing from Round Rock
199.0° SSW

Halfway between Austin and Round Rock

The great-circle midpoint is at 30.412358, -97.708853 (30°24'44.49"N 97°42'31.87"W). The nearest incorporated place of 1,000 or more people is Pflugerville, TX, with 66,819 residents, 6.8 miles from the midpoint. To find towns near the midpoint of any two places, use the halfway tool.

Time zones and daylight

Both use America/Chicago, so there is no time difference. On June 21, Austin gets 14 h 06 min of daylight and Round Rock 14 h 07 min; on December 21, 10 h 11 min and 10 h 10 min. The two sit at nearly the same latitude, so their day lengths match closely all year.

Population compared

Austin has 7.3 times the population of Round Rock. From July 2020 to July 2024, Austin changed by +2.9% and Round Rock by +12.3%. Both are in Texas.

  1. 01Austin, TX993,588 (+2.9%)
  2. 02Round Rock, TX135,359 (+12.3%)
July 1, 2024 population and change since July 2020, Census Vintage 2024.

Questions people ask

How far is Austin from Round Rock?

16.6 miles, 26.8 km or 14.4 nautical miles along the great circle between the two Census internal points. Road distance is longer.

Which direction is Round Rock from Austin?

NNE. The great-circle path leaves Austin on a bearing of 18.9° and arrives at Round Rock on 19.0°. The return trip starts on 199.0°.

What is halfway between Austin and Round Rock?

The midpoint is at 30.412358, -97.708853. The nearest incorporated place of 1,000+ is Pflugerville, TX, 6.8 miles from it.

Is there a time difference between Austin and Round Rock?

Both use America/Chicago, so there is no time difference.

Which is bigger, Austin or Round Rock?

Austin, with 993,588 residents in July 2024 against 135,359 for Round Rock, 7.3 times as many.

Sources and data as of

Data as of: Census 2024 Gazetteer internal points and Vintage 2024 estimates; time zones from Open-Meteo.

  1. 01Census 2024 Gazetteer, places
  2. 02Census Vintage 2024 subcounty population estimates
  3. 03SunCalc library (Vladimir Agafonkin), algorithms after Jean Meeus
  4. 04IANA time zone database (clock times and daylight saving rules)

How every number is computed: methodology. Spotted a wrong figure? Report an error.