California

Distance from Hayward to San Mateo

Straight-line distance

12.2mi

Hayward, CA and San Mateo, CA are 12.2 miles (19.7 km) apart in a straight line. From Hayward, the shortest path starts out heading WSW (248°).

kilometers
19.7
nautical miles
10.6
heading from Hayward
248° WSW
heading from San Mateo
68° ENE
HaywardSan Mateo

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

How far Hayward is from San Mateo

The great-circle distance between the Census internal points of Hayward and San Mateo is 12.2 miles, 19.7 km or 10.6 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 12.2 miles, practically the same at this range.

Measurements

Miles
12.2
Kilometers
19.7
Nautical miles
10.6
Bearing from Hayward
248.0° WSW
Bearing arriving at San Mateo
247.8°
Bearing from San Mateo
67.8° ENE

Halfway between Hayward and San Mateo

The great-circle midpoint is at 37.593595, -122.207346 (37°35'36.94"N 122°12'26.45"W). The nearest incorporated place of 1,000 or more people is Foster City, CA, with 32,657 residents, 3.1 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/Los_Angeles, so there is no time difference. On June 21, Hayward gets 14 h 46 min of daylight and San Mateo 14 h 46 min; on December 21, 9 h 34 min and 9 h 34 min. The two sit at nearly the same latitude, so their day lengths match closely all year.

Population compared

Hayward has 1.5 times the population of San Mateo. From July 2020 to July 2024, Hayward changed by -2.6% and San Mateo by -2.5%. Both are in California.

  1. 01Hayward, CA158,440 (-2.6%)
  2. 02San Mateo, CA103,006 (-2.5%)
July 1, 2024 population and change since July 2020, Census Vintage 2024.

Questions people ask

How far is Hayward from San Mateo?

12.2 miles, 19.7 km or 10.6 nautical miles along the great circle between the two Census internal points. Road distance is longer.

Which direction is San Mateo from Hayward?

WSW. The great-circle path leaves Hayward on a bearing of 248.0° and arrives at San Mateo on 247.8°. The return trip starts on 67.8°.

What is halfway between Hayward and San Mateo?

The midpoint is at 37.593595, -122.207346. The nearest incorporated place of 1,000+ is Foster City, CA, 3.1 miles from it.

Is there a time difference between Hayward and San Mateo?

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

Which is bigger, Hayward or San Mateo?

Hayward, with 158,440 residents in July 2024 against 103,006 for San Mateo, 1.5 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.