Sidney, Montana

Sidney population, 2020 to 2024

Sidney lost 333 residents from July 2020 to July 2024, a change of -5.2%. In the latest year it moved by -37. Among 19 Montana places of 5,000 or more, that growth ranks 19th; the median place changed by +5.1%. The median place of 5,000+ in Montana has 9,256 people, so Sidney is 65% of it.

Sidney covers 3.29 square miles of land and 0.02 of water, for 1,833 people per square mile of land. The median Montana place of 5,000+ has 2,232, so Sidney is less dense than the typical town.

What county Sidney is in

All of Sidney's residents live in Richland County, which had 11,028 residents in 2024. Sidney holds 54.7% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Sidney

1 ZIP Code Tabulation Area (ZCTA) overlaps Sidney by at least 10% of the ZCTA's or the city's land: 59270. 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 Sidney is

The Census internal point of Sidney is at 47.715500, -104.167200. Helena, the capital, is 376.8 miles W in a straight line. The nearest larger place is Williston, ND (28,821 people), 40.6 miles away. The nearest city of 100,000 or more is Billings, MT, 246.6 miles away.

Daylight in Sidney

At 47.72° N, Sidney gets about 16 h 00 min of daylight around the June solstice and 8 h 25 min around the December solstice, a swing of 7 h 36 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Sidney

The eight nearest incorporated places of 1,000+ in Montana, measured between internal points. The closest is Glendive, 49.2 miles away, with 4,760 people.