Castroville, Texas

Castroville population, 2020 to 2024

Castroville added 225 residents from July 2020 to July 2024, a change of +7.6%. In the latest year it moved by +32.

Castroville covers 3.55 square miles of land and 0.03 of water, for 902 people per square mile of land. The median Texas place of 5,000+ has 1,561, so Castroville is less dense than the typical town.

What county Castroville is in

All of Castroville's residents live in Medina County, which had 55,619 residents in 2024. Castroville holds 5.8% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Castroville

1 ZIP Code Tabulation Area (ZCTA) overlaps Castroville by at least 10% of the ZCTA's or the city's land: 78009. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Castroville is

The Census internal point of Castroville is at 29.359900, -98.854700. Austin, the capital, is 91.9 miles NE in a straight line. The nearest larger place is Lytle, TX (3,325 people), 9.4 miles away. The nearest city of 100,000 or more is San Antonio, TX, 21.1 miles away.

Daylight in Castroville

At 29.36° N, Castroville gets about 14 h 02 min of daylight around the June solstice and 10 h 16 min around the December solstice, a swing of 3 h 46 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Castroville

The eight nearest incorporated places of 1,000+ in Texas, measured between internal points. The closest is LaCoste, 4.3 miles away, with 1,222 people.