Southend-on-Sea is located in the county of Essex, Eastern England, three miles east of the town of Leigh-on-Sea, and 36 miles east of London. Southend-on-Sea lies three miles north of the Kent border. Southend-on-Sea falls within the unitary authority of Southend-on-Sea. It is in the SS1 postcode district.
Southend-on-Sea is in the ceremonial county of Essex, the historic county of Essex, and the administrative county of Southend-on-Sea.
Southend-on-Sea is situated towards the southernmost extremity of Essex, and roughly centrally between the easternmost and westernmost extremities of Essex.
The nearest postcode to the centre of Southend-on-Sea is SS1 1QH.
Southend-on-Sea is situated towards the northernmost extremity of the SS1 postcode district, and towards the westernmost extremity of the SS1 postcode district.
The centre of Southend-on-Sea is located at position 51.54012° latitude and 0.71138° longitude.
The centre of Southend-on-Sea is located at the grid reference easting 588125 and northing 185842 within the British National Grid (OSGB36) system.
Position of Southend-on-Sea relative to nearby towns. Distance is measured from the centre of Southend-on-Sea to the centre of the town.
Position of Southend-on-Sea relative to nearby cities. Distance is measured from the centre of Southend-on-Sea to the centre of the city.