Day County
URL: https://knowledge.ivjn.us/en/places/sd-day-county.html

Day County is a county of South Dakota, United States.

## Overview

Day County is a county of [South Dakota](https://knowledge.ivjn.us/en/places/south-dakota.html), United States (FIPS sd037), with a population of about 5,710[^geonames].

## Geography

- Coordinates: 45.3672, -97.6074
- Time zone: America/Chicago

Updated: 2026-10-29

Relations:
- Located in: South Dakota https://knowledge.ivjn.us/en/places/south-dakota.html
- Contains places: Andover https://knowledge.ivjn.us/en/places/sd-andover.html
- Contains places: Bristol https://knowledge.ivjn.us/en/places/sd-bristol.html
- Contains places: Butler https://knowledge.ivjn.us/en/places/sd-butler.html
- Contains places: Grenville https://knowledge.ivjn.us/en/places/sd-grenville.html
- Contains places: Lily https://knowledge.ivjn.us/en/places/sd-lily.html
- Contains places: Pierpont https://knowledge.ivjn.us/en/places/sd-pierpont.html
- Contains places: Roslyn https://knowledge.ivjn.us/en/places/sd-roslyn.html
- Contains places: Waubay https://knowledge.ivjn.us/en/places/sd-waubay.html
- Contains places: Webster https://knowledge.ivjn.us/en/places/sd-webster.html

Mentioned in:
- Andover https://knowledge.ivjn.us/en/places/sd-andover.html
- Bristol https://knowledge.ivjn.us/en/places/sd-bristol.html
- Butler https://knowledge.ivjn.us/en/places/sd-butler.html
- Grenville https://knowledge.ivjn.us/en/places/sd-grenville.html
- Lily https://knowledge.ivjn.us/en/places/sd-lily.html
- Pierpont https://knowledge.ivjn.us/en/places/sd-pierpont.html
- Roslyn https://knowledge.ivjn.us/en/places/sd-roslyn.html
- Waubay https://knowledge.ivjn.us/en/places/sd-waubay.html
- Webster https://knowledge.ivjn.us/en/places/sd-webster.html

Sources:
- GeoNames US dataset (US.txt / admin2Codes.txt) https://download.geonames.org/export/dump/US.zip