Powerstock is a village and civil parish in southwest Dorset, England, situated in a steep valley on the edge of the Dorset Downs, northeast of the market town of Bridport. The civil parish includes the village of West Milton to the west and the summit and northern slopes of Eggardon Hill to the southeast. On the other side of the valley is a small hamlet called Nettlecombe (redirected here). The small Mangerton River runs through the valley.
Powerstock has a population of 415. It was originally known as 'Poorstock' but this was changed to 'Powerstock' when the Bridport Railway was built in 1857, possibly to avoid connotations of 'poor (rolling) stock'. Powerstock railway station (and the entire Bridport branch line) closed on 5 May 1975.
Dorset Research Tips
One of the many maps available on the website A Vision of Britain through Time is one from the Ordnance Survey Series of 1900 illustrating the parish boundaries of Dorset at the turn of the 20th century. This map blows up to show all the parishes and many of the small villages and hamlets. The internal boundaries on this map are the rural districts which are indicated in the "See Also" box for the place concerned (unless it is an urban parish).
The following websites have pages explaining their provisions in WeRelate's Repository Section. Some provide free online databases. Some are linked to Ancestry.