Međimurje County is a triangle-shaped county in the northernmost part of Croatia, roughly corresponding to the historical and geographical region of Međimurje. Despite being the smallest Croatian county by size, it is the most densely populated one (not including the City of Zagreb). The county seat is Čakovec, which is also the largest city of the county.
The county borders Slovenia in the north-west and Hungary in the east, with about 30 kilometers of Slovenian territory separating it from Austria. The south-eastern corner of the county is near the town of Legrad and the confluence of the Mura into the Drava. The closest cities include Varaždin, Koprivnica and Bjelovar in Croatia, Murska Sobota and Maribor in Slovenia, as well as Nagykanizsa in Hungary and Graz in Austria. The Croatian capital of Zagreb is about 90 kilometers south-west of Čakovec.
There are slopes of the Alpine foothills in the north-western part of the county, the Upper Međimurje, making it suitable for vineyards. The south-eastern part of the county, the Lower Međimurje, touches the flat Pannonian Plain. The flat parts of the region are also largely used for agriculture, which mostly includes fields of cereals, maize and potato, as well as orchards, which are mostly planted with apple trees. There are two major hydroelectric power plants along the southern border of the county, on the Drava River.