Texas

Distance from Allen to Richardson

Straight-line distance

9.7mi

Allen, TX and Richardson, TX are 9.7 miles (15.6 km) apart in a straight line. From Allen, the shortest path starts out heading SSW (192°).

kilometers
15.6
nautical miles
8.4
heading from Allen
192° SSW
heading from Richardson
12° NNE
AllenRichardson

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

How far Allen is from Richardson

The great-circle distance between the Census internal points of Allen and Richardson is 9.7 miles, 15.6 km or 8.4 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 9.7 miles, practically the same at this range.

Measurements

Miles
9.7
Kilometers
15.6
Nautical miles
8.4
Bearing from Allen
192.1° SSW
Bearing arriving at Richardson
192.1°
Bearing from Richardson
12.1° NNE

Halfway between Allen and Richardson

The great-circle midpoint is at 33.041001, -96.690564 (33°02'27.60"N 96°41'26.03"W). The nearest incorporated place of 1,000 or more people is Plano, TX, with 293,286 residents, 3.4 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, Allen gets 14 h 21 min of daylight and Richardson 14 h 20 min; on December 21, 9 h 58 min and 9 h 59 min. The two sit at nearly the same latitude, so their day lengths match closely all year.

Population compared

Richardson has 1.0 times the population of Allen. From July 2020 to July 2024, Allen changed by +7.8% and Richardson by -0.9%. Both are in Texas.

  1. 01Allen, TX113,746 (+7.8%)
  2. 02Richardson, TX118,221 (-0.9%)
July 1, 2024 population and change since July 2020, Census Vintage 2024.

Questions people ask

How far is Allen from Richardson?

9.7 miles, 15.6 km or 8.4 nautical miles along the great circle between the two Census internal points. Road distance is longer.

Which direction is Richardson from Allen?

SSW. The great-circle path leaves Allen on a bearing of 192.1° and arrives at Richardson on 192.1°. The return trip starts on 12.1°.

What is halfway between Allen and Richardson?

The midpoint is at 33.041001, -96.690564. The nearest incorporated place of 1,000+ is Plano, TX, 3.4 miles from it.

Is there a time difference between Allen and Richardson?

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

Which is bigger, Allen or Richardson?

Richardson, with 118,221 residents in July 2024 against 113,746 for Allen, 1.0 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.