| Official Name: | Alytus county |
| Native Name: | Alytaus apskritis |
| Native Name Lang: | lt |
| Settlement Type: | County |
| Coordinates: | = 54.3869°N 24.0433°W |
| Subdivision Type: | Country |
| Iso Code: | LT-AL |
| Parts Type: | Municipalities |
| P1: | Alytus city municipality |
| P2: | Alytus district municipality |
| P3: | Druskininkai municipality |
| P4: | Lazdijai district municipality |
| P5: | Varėna district municipality |
| Seat Type: | Administrative centre |
| Seat: | Alytus |
| Area Total Km2: | 5,418 |
| Area Note: | (8.3% of the area of Lithuania) |
| Population Total: | 134070 |
| Population Density Km2: | auto |
| Population As Of: | 2020-01-01 |
| Population Rank: | 7th of 10 (5.2% of the population of Lithuania) |
| Demographics Type2: | GDP |
| Demographics2 Footnotes: | [1] |
| Demographics2 Title1: | Total |
| Demographics2 Info1: | €1.8 billion (2022) |
| Blank Name Sec2: | HDI (2021) |
| Blank Info Sec2: | 0.841[2] · 7th |
| Timezone: | EET |
| Utc Offset: | +2 |
| Timezone Dst: | EEST |
| Utc Offset Dst: | +3 |
Alytus County (Lithuanian: Alytaus apskritis) is one of ten counties in Lithuania. It is the southernmost county, and its capital is the city of Alytus. Its territory lies within the ethnographic region of Dzūkija. On 1 July 2010, the county administration was abolished,[3] and since that date, Alytus County remains as the territorial and statistical unit.
It borders the Vilnius County in the east, Marijampolė County and Kaunas County in the north, Podlaskie Voivodeship of Poland in the west, and Grodno Region of Belarus in the south.
Alytus County has 5 constituent municipalities:
The town of Druskininkai, a spa visited for its healing waters, is located in Alytus County, as is Grūtas Park, also known as Stalin World, a Soviet theme park. There are more than 420 lakes in Alytus County.
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