Warsaw Voivodeship in mid-1939 consisted of 22 powiats (counties), 53 cities and towns and 293 villages. The counties were: •
Błonie county (area 1,074 km², pop. 143,900), •
Ciechanów county (area 1,209 km², pop. 78,800), •
Działdowo county (area 842 km², pop. 42,700), •
Garwolin county (area 2,044 km², pop. 175,700), •
Gostynin county (area 1,147 km², pop. 81,600), •
Grójec county (area 1,699 km², pop. 132,400), •
Łomża county (area 2,657 km², pop. 168,200), •
Maków Mazowiecki county (area 1,136 km², pop. 65,600), •
Mińsk Mazowiecki county (area 1,228 km², pop. 111,100), •
Mława county (area 1,486 km², pop. 103,100), •
Ostrołęka county (area 2,281 km², pop. 112,600), •
Ostrów Mazowiecka county (area 1,467 km², pop. 99,800), •
Płock county (area 1,485 km², pop. 128,100), •
Płońsk county (area 1,289 km², pop. 81,400), •
Przasnysz county (area 1,410 km², pop. 69,100), •
Pułtusk county (area 1,527 km², pop. 118,100), •
Radzymin county (area 1,076 km², pop. 97,500), •
Sierpc county (area 1,204 km², pop. 84,900), •
Sochaczew county (area 1,052 km², pop. 75,200), •
Sokołów Podlaski county (area 1,276 km², pop. 83,900), •
Warsaw county (area 1,766 km², pop. 318,500), •
Węgrów county (area 1,301 km², pop. 88,800). The city of Warsaw, with the area of 141 km² (134 km² of built-up area plus 7 km² of the Vistula river) and population of 1 179 500 (as of 1931) was considered a separate unit, just like any other Voivodeship. It was divided into 4 counties. These were: • South Warsaw county (area 50 km², pop. 307,100), • North Warsaw county (area 31 km², pop. 478,200), • Warsaw-Praga county (area 43 km², pop. 176,100), • Central Warsaw county (area 10 km², pop. 218,100). It was the smallest and the most densely populated county in Poland in the 1930s. Population density there was 22 415 persons per km². The biggest cities of the Voivodeship were (population according to the 1931 Polish census): • Warsaw (pop. 1,179,500), • Płock (pop. 33,000), • Żyrardów (pop. 25,100), • Łomża (pop. 25,000), • Pruszków (pop. 23,700), • Mława (pop. 19,600), • Ostrów Mazowiecka (pop. 17,600), • Pułtusk (pop. 16,800), • Grodzisk Mazowiecki (pop. 15,700), • Otwock (pop. 15,100), • Ostrołęka (pop. 14,100), • Wolomin (pop. 14,100), • Ciechanów (pop. 13,900). ==Voivodes==