In 2011, it had a population of 258,669 and the population density was 58.08/km². Romanians make up 95.6% of the population, the largest minority being the Romani people.
Year
County population
1948
244,750
1956
274,655
1966
291,373
1977
295,965
1992
304,008
2002
296,572
2011
258,669
Geography
This county has a total area of 4,453 km². The county is situated in the Bărăgan Plain, all the area is flat crossed by small rivers with small but deep valleys. Its east border is on Danube and the Ialomița River crosses the county from West to East about the middle. The Danube is split around the Ialomița Pond - the Old Danube branch and the Borcea branch. Until 1940 and 1967 the county/plain was home of the great bustard, with large populations of this bird. The birds disappeared because of the massive village buildout and hunting them for food.
Agriculture is the main occupation in the county. Industry is almost entirely concentrated in the city of Slobozia. The predominant industries in the county are:
Ialomița County has 3 municipalities, 4 towns and 59 communes.
Municipalities
*Fetești - population: 27,122
*Slobozia - capital city; population: 43,061
*Urziceni - population: 14,053
Towns
*Amara
*Căzănești
*Fierbinți-Târg
*Țăndărei
Communes
*Adâncata
*Albești
*Alexeni
*Andrășești
*Armășești
*Axintele
*Balaciu
*Bărcănești
*Bărbulești
*Borănești
*Bordușani
*Bucu
*Buești
*Ciocârlia
*Ciochina
*Ciulnița
*Cocora
*Colelia
*Cosâmbești
*Coșereni
*Drăgoești
*Dridu
*Făcăeni
*Gârbovi
*Gheorghe Doja
*Gheorghe Lazăr
*Giurgeni
*Grindu
*Grivița
*Gura Ialomiței
*Ion Roată
*Jilavele
*Maia
*Manasia
*Mărculești
*Mihail Kogălniceanu
*Miloșești
*Moldoveni
*Movila
*Movilița
*Munteni-Buzău
*Ograda
*Perieți
*Platonești
*Rădulești
*Reviga
*Roșiori
*Sălcioara
*Sărățeni
*Săveni
*Scânteia
*Sfântu Gheorghe
*Sinești
*Stelnica
*Sudiți
*Traian
*Valea Ciorii
*Valea Măcrișului
*Vlădeni
Historical county
Historically, the county was located in the southeastern part of the Greater Romania, in the southeastern part of the historical region of Muntenia. The county comprised a large part of the current Ialomița County and of today's Călărași County. It was bordered on the west by Ilfov, to the north by the counties of Prahova, Buzău and Brăila, to the east by the county Constanța County, and in the south by Durostor County. With an area of, Ialomiţa County was one of the largest counties of Greater Romania.
Administration
The county was originally divided administratively into five districts :
According to the 1930 census data, the county population was 293,352 inhabitants, ethnically divided as follows: 96.6% Romanians, 2.5% Romanies, 0.2% Jews, as well as other minorities. From the religious point of view, the population was 99.3% Eastern Orthodox, 0.2% Jewish, 0.1% Roman Catholic, as well as other minorities.
Urban population
In 1930, the county's urban population was 34,260 inhabitants, comprising 90.2% Romanians, 6.0% Romnanies, 1.3% Jews, as well as other minorities. From the religious point of view, the urban population was composed of 97.4% Eastern Orthodox, 1.4% Jewish, 0.5% Roman Catholic, as well as other minorities.