Nagykőrös (Hungarian: Nagykőrösi járás) is a district in the south-eastern part of Pest County, Hungary. Nagykőrös is also the name of the town where the district seat is found. The district is located in the Central Hungary Statistical Region.

Nagykőrös District borders with Cegléd District to the north, Tiszakécske District (Bács-Kiskun County) to the southeast, Kecskemét District (Bács-Kiskun County) to the southwest. The number of the inhabited places in Nagykőrös District is 3.

The district has 1 town and 2 villages. (ordered by population, as of 1 January 2013)

The bolded municipality is the city.

In 2011, it had a population of 27,977 and the population density was 80/km.

Year	County population	Change
2011	27,977	n/a

Besides the Hungarian majority, the main minorities are the Roma (approx. 500), German (150) and Romanian (100).

Total population (2011 census): 27,977
Ethnic groups (2011 census): Identified themselves: 25,043 persons:

• Hungarians: 24,008 (95.87%)
• Gypsies: 467 (1.86%)
• Others and indefinable: 568 (2.27%)

Approx. 3,000 persons in Nagykőrös District did not declare their ethnic group at the 2011 census.

Religious adherence in the county according to 2011 census:

• Catholic – 7,406 (Roman Catholic – 7,368; Greek Catholic – 37);
• Reformed – 6,388;
• Evangelical – 93;
• other religions – 459;
• Non-religious – 5,393;
• Atheism – 236;
• Undeclared – 8,002.

• 
  Downtown of Nagykőrös
• 
  Aerial view of Kocsér
• 
  János Arany Museum in Nagykőrös
• 
  Reformed Church in Nagykőrös

• List of cities and towns in Hungary

• Postal codes of the Nagykőrös District