| Siemiatycze County | |
| Native Name: | Powiat siemiatycki |
| Settlement Type: | County |
| Total Type: | Total |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Area Total Km2: | 1459.58 |
| Population Total: | 44,366 |
| Population As Of: | 2019 |
| Population Density Km2: | auto |
| Population Urban: | 16388 |
| Population Blank1 Title: | Rural |
| Population Blank1: | 27978 |
| Coor Pinpoint: | Siemiatycze |
| Coordinates: | 52.4272°N 22.8625°W |
| Seat: | Siemiatycze |
| Parts Type: | Gminas |
| Parts: | Total 9 (incl. 1 urban) |
| P1: | Siemiatycze |
| P2: | Gmina Drohiczyn |
| P3: | Gmina Dziadkowice |
| P4: | Gmina Grodzisk |
| P5: | Gmina Mielnik |
| P6: | Gmina Milejczyce |
| P7: | Gmina Nurzec-Stacja |
| P8: | Gmina Perlejewo |
| P9: | Gmina Siemiatycze |
| Blank Name: | Car plates |
| Blank Info: | BSI |
| Website: | http://www.siemiatycze.pl |
Siemiatycze County (Polish: powiat siemiatycki) is a unit of territorial administration and local government (powiat) in Podlaskie Voivodeship, north-eastern Poland, on the border with Belarus. It came into being on January 1, 1999, as a result of the Polish local government reforms passed in 1998. Its administrative seat and largest town is Siemiatycze, which lies 80km (50miles) south of the regional capital Białystok. The only other town in the county is Drohiczyn, lying 150NaN0 west of Siemiatycze.
The county covers an area of 1459.58km2. As of 2019 its total population is 44,366, out of which the population of Siemiatycze is 14,418, that of Drohiczyn is 1,970, and the rural population is 27,978.[1]
Siemiatycze County is bordered by Biała Podlaska County and Łosice County to the south, Siedlce County to the south-west, Sokołów County to the west, Wysokie Mazowieckie County and Bielsk County to the north, and Hajnówka County to the north-east. It also borders Belarus to the east.
The county is subdivided into nine gminas (one urban, one urban-rural and seven rural). These are listed in the following table, in descending order of population.
| Gmina | Type | Area (km²) | Population (2019) | Seat |
| Siemiatycze | urban | 36.3 | 14,418 | |
| Gmina Drohiczyn | urban-rural | 208.0 | 6,245 | Drohiczyn |
| Gmina Siemiatycze | rural | 227.1 | 6,078 | Siemiatycze * |
| Gmina Grodzisk | rural | 203.2 | 4,181 | Grodzisk |
| Gmina Nurzec-Stacja | rural | 215.0 | 3,831 | Nurzec-Stacja |
| Gmina Perlejewo | rural | 106.3 | 2,793 | Perlejewo |
| Gmina Dziadkowice | rural | 115.7 | 2,735 | Dziadkowice |
| Gmina Mielnik | rural | 196.2 | 2,352 | Mielnik |
| Gmina Milejczyce | rural | 151.8 | 1,733 | Milejczyce |
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