Rio, Wisconsin

Rio population, 2020 to 2024

Rio added 0 residents from July 2020 to July 2024, a change of +0.0%. In the latest year it moved by -7.

Rio covers 1.25 square miles of land, for 901 people per square mile of land. The median Wisconsin place of 5,000+ has 1,583, so Rio is less dense than the typical town.

What county Rio is in

All of Rio's residents live in Columbia County, which had 58,113 residents in 2024. Rio holds 1.9% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Rio

1 ZIP Code Tabulation Area (ZCTA) overlaps Rio by at least 10% of the ZCTA's or the village's land: 53960. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a village that annexed land after 2020 may reach into ZIP codes not listed here.

Where Rio is

The Census internal point of Rio is at 43.452200, -89.241600. Madison, the capital, is 27.0 miles SSW in a straight line. The nearest larger place is Pardeeville, WI (2,258 people), 6.6 miles away. The nearest city of 100,000 or more is Madison, WI, 26.9 miles away.

Daylight in Rio

At 43.45° N, Rio gets about 15 h 25 min of daylight around the June solstice and 8 h 57 min around the December solstice, a swing of 6 h 28 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Rio

The eight nearest incorporated places of 1,000+ in Wisconsin, measured between internal points. The closest is Pardeeville, 6.6 miles away, with 2,258 people.