The district office is the place which houses the administration of the district (อำเภอ - amphoe) ; there is an average 10/12 districts for each one of the 78 thai provinces.

Courts and police stations generally have their own location. In Sikoraphum the police station is very close to the district office and next door to Sikhoraphum Sub-district office (pic 2), but I could not locate any court in Sikhoraphum from Google Maps.

In fact I think there is only one Court in the province which is obviously located in Surin Town. Thanks God I never had to deal with the thai judicial system