Millboro, South Dakota

Millboro: township in Tripp County, South Dakota

About

Millboro is a township located in the county of Tripp in the U.S. state of South Dakota. Its population at the 2010 census was 35. After 10 years in 2020 city had an estimated population of 33 inhabitants.

Quick Facts about Millboro

Population 33 (2020)
Country United States of America
State South Dakota (United States)
County Tripp County
Latitude & Longitude 43.0731,-99.9690
Time Zone America/Chicago
Local time 05:59:53 (23rd April 2026)
Population growth -6.06% (2010-2020)
Weather 75℉ Slight Chance Rain Showers 7-days weather

Geography

Millboro is located at 43°4'23"N 99°58'8"W (43.0730600, -99.9690100).

Millboro map

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Weather

75°F
Slight Chance Rain Showers
13 to 23 mph W Thursday

A slight chance of rain showers. Mostly sunny, with a high near 75.

7-Day Forecast

Demographics

According to census records, the population of Millboro decreased by 6.06% in 10 years.

Year Population % Change Method
2010 35 - census
2011 35 0% estimation process
2012 34 -2.94% estimation process
2013 34 0% estimation process
2014 34 0% estimation process
2015 33 -3.03% estimation process
2016 34 2.94% estimation process
2017 33 -3.03% estimation process
2018 34 2.94% estimation process
2019 33 -3.03% estimation process
2020 33 0% estimation process

Closest post offices linked to Millboro.

Post Office Name City ZIP
Colom Post Office Colome (SD) 57528

Other cities in Tripp County

Cities, towns, neighborhoods & other populated places in Tripp County , SD.

City Name Population Title
Winner 2,787 City in and county seat of Tripp County, South Dakota, United States
Ideal 120 Community in South Dakota, United States
Colome 72 Township in Tripp County, South Dakota
Carter 39 Unincorporated community in South Dakota
Keyapaha 22 Unincorporated community in South Dakota
Witten 20 Unincorporated community in South Dakota