The Jefferson Census Designated Place had a population of 2,174 as of July 1, 2015. The primary coordinate point for Jefferson is located at latitude 39.3674 and longitude -77.5426 in Frederick County. The formal boundaries for the Jefferson Census Designated Place (see map below) encompass a land area of 2.1 sq. miles and a water area of 0 sq. miles. Frederick County is in the Eastern time zone (GMT -5). The elevation is 581 feet. The Jefferson Census Designated Place (GNIS ID: 2583640) has a U1 Census Class Code which indicates a census designated place with an official federally recognized name.
Caribou herds migrate different distances. Large herds are more apt to migrate long distances, while smaller herds often migrate shorter distances. For example, the Porcupine caribou herd, which contains about 169,000 animals, migrates between summer and winter ranges that are about 400 miles apart. The Central Arctic herd, which contains about 70,000 animals, migrates between summer and winter ranges that are about 120 miles apart.
Alaska's Western Arctic Caribou herd forms aggregations or groups that can stretch for miles. The herd is on a three-year census schedule. The Department attempted a census during July 2002 but high wind, snow and fog forced a one-year delay. Weather almost prevented the 2003 attempt as well.