Pennsylvania to Connecticut

Distance from Allentown to Stamford

Straight-line distance

106.4mi

Allentown, PA and Stamford, CT are 106.4 miles (171.3 km) apart in a straight line. From Allentown, the shortest path starts out heading ENE (71°).

kilometers
171.3
nautical miles
92.5
heading from Allentown
71° ENE
heading from Stamford
252° WSW
AllentownStamford

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

How far Allentown is from Stamford

The great-circle distance between the Census internal points of Allentown and Stamford is 106.4 miles, 171.3 km or 92.5 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 106.4 miles, practically the same at this range.

Measurements

Miles
106.4
Kilometers
171.3
Nautical miles
92.5
Bearing from Allentown
71.0° ENE
Bearing arriving at Stamford
72.2°
Bearing from Stamford
252.2° WSW

Halfway between Allentown and Stamford

The great-circle midpoint is at 40.840630, -74.515792 (40°50'26.27"N 74°30'56.85"W). The nearest incorporated place of 1,000 or more people is Morris Plains, NJ, with 6,590 residents, 2.2 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/New_York, so there is no time difference. On June 21, Allentown gets 15 h 05 min of daylight and Stamford 15 h 08 min; on December 21, 9 h 16 min and 9 h 13 min. The two sit at nearly the same latitude, so their day lengths match closely all year.

Population compared

Stamford has 1.1 times the population of Allentown. From July 2020 to July 2024, Allentown changed by +1.1% and Stamford by +2.7%. The trip crosses from Pennsylvania into Connecticut.

  1. 01Allentown, PA127,138 (+1.1%)
  2. 02Stamford, CT139,134 (+2.7%)
July 1, 2024 population and change since July 2020, Census Vintage 2024.

Questions people ask

How far is Allentown from Stamford?

106.4 miles, 171.3 km or 92.5 nautical miles along the great circle between the two Census internal points. Road distance is longer.

Which direction is Stamford from Allentown?

ENE. The great-circle path leaves Allentown on a bearing of 71.0° and arrives at Stamford on 72.2°. The return trip starts on 252.2°.

What is halfway between Allentown and Stamford?

The midpoint is at 40.840630, -74.515792. The nearest incorporated place of 1,000+ is Morris Plains, NJ, 2.2 miles from it.

Is there a time difference between Allentown and Stamford?

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

Which is bigger, Allentown or Stamford?

Stamford, with 139,134 residents in July 2024 against 127,138 for Allentown, 1.1 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.