| Siedlce County | |
| Native Name: | Powiat siedlecki |
| Settlement Type: | County |
| Total Type: | Total |
| Image Blank Emblem: | POL powiat siedlecki logo.svg |
| Image Map1: | POL powiat siedlecki map.svg |
| Map Caption1: | Division into gminas |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Masovian |
| Area Total Km2: | 1603.22 |
| Population Total: | 81265 |
| Population As Of: | 2019 |
| Population Density Km2: | auto |
| Population Urban: | 1788 |
| Population Blank1 Title: | Rural |
| Population Blank1: | 79477 |
| Coor Pinpoint: | Siedlce |
| Coordinates: | 52.165°N 22.2714°W |
| Seat: | Siedlce |
| Parts Type: | Gminas |
| Parts: | Total 13 |
| P1: | Gmina Domanice |
| P2: | Gmina Korczew |
| P3: | Gmina Kotuń |
| P4: | Gmina Mokobody |
| P5: | Gmina Mordy |
| P6: | Gmina Paprotnia |
| P7: | Gmina Przesmyki |
| P8: | Gmina Siedlce |
| P9: | Gmina Skórzec |
| P10: | Gmina Suchożebry |
| P11: | Gmina Wiśniew |
| P12: | Gmina Wodynie |
| P13: | Gmina Zbuczyn |
| Blank Name: | Car plates |
| Blank Info: | WSI |
| Website: | http://www.powiatsiedlecki.pl/ |
Siedlce County (Polish: powiat siedlecki) is a unit of territorial administration and local government (powiat) in Masovian Voivodeship, east-central Poland. It came into being on January 1, 1999, as a result of the Polish local government reforms passed in 1998. Its administrative seat is the city of Siedlce, although the city is not part of the county (it constitutes a separate city county). The only town in Siedlce County is Mordy, which lies 180NaN0 east of Siedlce.
The county covers an area of 1603.22km2. As of 2019 its total population is 81,265, out of which the population of Mordy is 1,788 and the rural population is 79,477.[1]
Apart from the city of Siedlce, Siedlce County is also bordered by Węgrów County and Sokołów County to the north, Siemiatycze County to the north-east, Łosice County and Biała Podlaska County to the east, Łuków County to the south, Garwolin County to the south-west, and Mińsk County to the west.
The county is subdivided into 13 gminas (one urban-rural and 12 rural). These are listed in the following table, in descending order of population.
| Gmina | Type | Area (km2) | Population (2019) | Seat |
| Gmina Siedlce | rural | 141.5 | 18,261 | Siedlce * |
| Gmina Zbuczyn | rural | 210.8 | 10,052 | Zbuczyn |
| Gmina Kotuń | rural | 149.9 | 8,510 | Kotuń |
| Gmina Skórzec | rural | 118.9 | 7,836 | Skórzec |
| Gmina Mordy | urban-rural | 170.2 | 5,814 | Mordy |
| Gmina Wiśniew | rural | 125.9 | 5,755 | Wiśniew |
| Gmina Mokobody | rural | 119.2 | 5,004 | Mokobody |
| Gmina Wodynie | rural | 115.7 | 4,761 | Wodynie |
| Gmina Suchożebry | rural | 100.7 | 4,690 | Suchożebry |
| Gmina Przesmyki | rural | 117.1 | 3,163 | Przesmyki |
| Gmina Domanice | rural | 46.9 | 2,621 | Domanice |
| Gmina Korczew | rural | 105.1 | 2,594 | Korczew |
| Gmina Paprotnia | rural | 81.4 | 2,565 | Paprotnia |
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