Sergehill is located in the county of Hertfordshire, Eastern England, three miles south-west of the major city of St Albans, and 18 miles north-west of London. Sergehill lies six miles south-east of the Buckinghamshire border. Sergehill falls within the district council of St. Albans, under the county council of Hertfordshire. It is in the WD5 postcode district. The post town for Sergehill is Abbots Langley.
Sergehill is in the ceremonial county of Hertfordshire, the historic county of Hertfordshire, and the administrative county of Hertfordshire.
Sergehill is situated towards the southernmost extremity of Hertfordshire, and roughly centrally between the easternmost and westernmost extremities of Hertfordshire.
The nearest postcode to the centre of Sergehill is WD5 0RY.
Sergehill is situated towards the northernmost extremity of the WD5 postcode district, and towards the easternmost extremity of the WD5 postcode district.
The post town for Sergehill is Abbots Langley. Sergehill is in the WD5 postcode district, which corresponds to the post town of Abbots Langley.
The centre of Sergehill is located at position 51.72502° latitude and -0.39844° longitude.
The centre of Sergehill is located at the grid reference easting 510717 and northing 204136 within the British National Grid (OSGB36) system.
Position of Sergehill relative to nearby towns. Distance is measured from the centre of Sergehill to the centre of the town.
Position of Sergehill relative to nearby cities. Distance is measured from the centre of Sergehill to the centre of the city.