Capital of Wejherowo County in Pomeranian Voivodship since 1999, previously a town in Gdansk Voivodship (1975-1998).
Population Wejherowo 1950: ? inhabitants 1960: 24,500 inhabitants 1970: 33,800 inhabitants 1975: 37,700 inhabitants 1980: 42,400 inhabitants 1990: 46,800 inhabitants 1995: 47,300 inhabitants 2000: ? inhabitants
Wejherowo 1950: ? inhabitants 1960: 24,500 inhabitants 1970: 33,800 inhabitants 1975: 37,700 inhabitants 1980: 42,400 inhabitants 1990: 46,800 inhabitants 1995: 47,300 inhabitants 2000: ? inhabitants