格雷戈里縣 (南達科他州)

{{Infobox U.S. county
| state = South Dakota
| county = Gregory County
| county_zh = 格雷戈里縣
| seal =
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| founded =
| named for =
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| area_total_km2 = 2728
| area_total_sq_mi = 1053
| area_land_km2 = 2631
| area_land_sq_mi = 1016
| area_water_km2 = 97
| area_water_sq_mi = 38
| area percentage = 3.26%
| census yr = 2000
| census estimate yr =
| pop = 4792
| population_density_km2 = 1
| population_density_sq_mi = 2
| time zone = Central
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| coordinates = {{coord|{}|0|N|{}|0|W|type:adm2nd|display=title,inline}}
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格雷戈里縣（）是美國南達科他州南部的一個縣，東傍密蘇里河，南鄰內布拉斯加州。面積2,728平方公里。根据美國2000年人口普查，共有人口4,792人。縣治伯克（Burke）。

縣政府成立於1898年，縣名紀念一名為C. H. Gregory的美國陸軍軍官。

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