Pike is a small unincorporated community within the town of Haverhill, New Hampshire, United States. It is located in western Grafton County, approximately 3 miles east of the village of Haverhill, on Oliverian Brook. The village was named after Alonzo Pike, who produced sharpening stones and tool and cutter grinders from a local deposit of Bethlehe…Pike is a small unincorporated community within the town of Haverhill, New Hampshire, United States. It is located in western Grafton County, approximately 3 miles east of the village of Haverhill, on Oliverian Brook. The village was named after Alonzo Pike, who produced sharpening stones and tool and cutter grinders from a local deposit of Bethlehem gneiss.