| Conventional Long Name: | Jász-Nagykun-Szolnok County |
| Common Name: | Jász-Nagykun-Szolnok |
| Subdivision: | County |
| Nation: | the Kingdom of Hungary |
| Year Start: | 1876 |
| Event End: | administrative division reform |
| Year End: | 1950 |
| Date End: | 1 February |
| Capital: | Szolnok |
| Stat Area1: | 5251 |
| Stat Pop1: | 373,964 |
| Stat Year1: | 1910 |
| Today: | Hungary |
Jász-Nagykun-Szolnok was an administrative county (comitatus) in the Kingdom of Hungary. Its territory, which is now in central Hungary, was slightly smaller than that of present Jász-Nagykun-Szolnok county. The capital of the county was Szolnok.
Jász-Nagykun-Szolnok county shared borders with the Hungarian counties Pest-Pilis-Solt-Kiskun, Heves, Hajdú, Békés, and Csongrád. The rivers Tisza and Körös flow through the county. Its area was 5251km2 around 1910.
Jász-Nagykun-Szolnok county was formed in 1876 from the territories of the Külső-Szolnok part of Heves-Külső-Szolnok County, the Jászság (Jazygia) and the Nagykunság (great Cumania). After World War II, the territory of the county was modified: the area on the left bank of the Tisza around Tiszafüred was taken from Heves county, and the area around Dévaványa went to Békés county.
The term Jász originates from the Jassic people (cf. Alans) who moved to this area of Hungary from the Pontic steppes sometime in the 13th century.
| 1880[1] | 278,443 | 263,994 (98.86%) | 3,036 (1.14%) |
|---|---|---|---|
| 1890[2] | 318,475 | 315,387 (99.03%) | 3,088 (0.97%) |
| 1900[3] | 350,269 | 348,050 (99.37%) | 2,219 (0.63%) |
| 1910[4] | 373,964 | 372,423 (99.59%) | 1,541 (0.41%) |
| 1880 | 278,443 | 154,261 (55.40%) | 113,192 (40.65%) | 8,319 (2.99%) | 2,671 (0.96%) |
|---|---|---|---|---|---|
| 1890 | 318,475 | 180,538 (56.69%) | 124,437 (39.07%) | 10,005 (3.14%) | 3,495 (1.10%) |
| 1900 | 350,269 | 204,306 (58.33%) | 131,120 (37.43%) | 10,707 (3.06%) | 4,136 (1.18%) |
| 1910 | 373,964 | 225,111 (60.20%) | 133,462 (35.69%) | 10,313 (2.76%) | 5,078 (1.36%) |
In the early 20th century, the subdivisions of Jász-Nagykun-Szolnok county were:
| Districts (járás) | ||
|---|---|---|
| District | Capital | |
| Jászság alsó | Jászapáti | |
| Jászság felső | Jászberény | |
| Tisza alsó | Tiszaföldvár | |
| Tisza felső | ||
| Tisza közép | Törökszentmiklós | |
| Urban districts (rendezett tanácsú város) | ||
| Jászberény | ||
| Karcag | ||
| Kisújszállás | ||
| Mezőtúr | ||
| Szolnok | ||
| Túrkeve | ||