Kaduna (Hausa: Jihar Kaduna, جىِهَر كَدُنا; مدينة كدونا; Fula: Leydi Kaduna, 𞤤𞤫𞤴𞤣𞤭 𞤳𞤢𞤣𞤵𞤲𞤢; Tyap: Si̱tet Ka̱duna) is a state in the northwest geopolitical zone of Nigeria. The state capital is its namesake, the city of Kaduna, which was the 8th largest city in the country as of 2006. Created in 1967 as North-Central State, which also encompassed the modern Katsina State, Kaduna State achieved its current borders in 1987. Kaduna State is the fourth largest and third most populous state in the country, Kaduna State is nicknamed the Centre of Learning, owing to the presence of numerous educational institutions of importance within the state such as Ahmadu Bello University, Nigerian Defence Academy, Air Force Institute of Technology (AFIT), Kaduna Polytechnic, etc.
Modern Kaduna State is home to the sites of some of Africa's oldest civilizations, including the Nok civilization that prospered from c. 1500 BC to c. 500 AD. In the 9th century, geographer and historian Ya'qubi documented the existence of the Hausa Kingdoms, which existed until the region was incorporated into the Sokoto Caliphate in the early 1800s. During the colonial era, the city of Kaduna was made the capital of Northern Nigeria Protectorate by British leadership.
The state economy is dependent on agriculture, especially cotton and groundnut production. In the modern era, Kaduna State has been the site of violent ethnic and religious conflict, with the 2002 Miss World riots in the state capital over purported blasphemy leading to around 250 deaths and the loss of homes for around 30,000.

Etymology
The most widespread etymology for the word Kaduna is that it is a corruption of the Hausa plural for crocodile, kadduna, as there used to be many crocodiles in the Kaduna River.
Another version of the etymology of the name is a narrative linked to the Gbagyi word/name 'Odna' for the Kaduna River.
History
Zazzau, a traditional state which lies within the province's capital, is said to have been founded in 1536. It would later be renamed to Zaria after the younger sister of Queen Amina. The Hausa people of Zaria & the Ham people of Jaba, are said to be the old ancestral of the region's north & south respectively.

It is indicative that the name, Kaduna, was taken up by Lord Frederick Lugard and his colonial colleagues when they moved the capital of the then Northern Region from Zungeru to Kaduna City in 1916. This move of the colonial office to Kaduna city started in 1912–1918/20, with the initial effort having been made in 1902 from Jebba to Zungeru.
At the start of British colonial rule in northern Nigeria, the people groups who lived in the area became 'Northern Nigerians'- a construct which continues even today. By 1967 these people groups were again carved into 'North Central State'; this was the case until 1975 when 'Kaduna State' was formerly created by the then military leader, Gen. Murtala Mohammed, with all distinct identities amalgamated into one state without a referendum. The state hence is the successor of the old Northern Region of Nigeria, which had its capital at Kaduna which is now the state capital of about 6.3 million people (Nigerian census figure, 2006).
In 1967, the old Northern Region was divided into six states in the north, leaving Kaduna as the capital of North-Central State, whose name was changed to Kaduna State in 1976. Meanwhile, Kaduna State was further divided in 1987, creating Katsina State. Under the governance of Kaduna are the ancient cities of Zaria, Kafanchan, and Nok. The most intriguing aspect of this area is that the colonial construction and its post-colonial successor called 'Nigeria' hardly documented the history or the method of how Kaduna State's people groups encompassed in these constructs define and identify themselves. As such, the people groups who populate the area have lived in near oblivion or obscurity as they are often thought of as Hausa people. In 2019 Kaduna State celebrated its 100th anniversary, making it one of the oldest states in Nigeria.

In 2021, Kaduna State was the site of several major attacks done by bandits involved in the Nigerian bandit conflict. On 24 February, at least 34 were killed in attacks in Kaduna and neighboring Katsina state. On 11 March, 39 students were kidnapped when gunmen attacked the Federal College of Forestry Mechanization. On 20 April, in another raid by bandits on Greenfield University students and staff, 22 were kidnapped and 6 of them were killed. On 5 July, a further 140 students were kidnapped from Bethel Baptist High School. Attacks have continued into 2022, 2023, and 2024.
Geography
The state is located in the Northern part of Nigeria's high plains. The vegetation cover is Sudan Savannah type, characterized by scattered short trees, shrubs and grasses. The soil is mostly loamy to sandy. A substantial amount of clay is found also.
Its northern half became Katsina state in 1987. The state is bordered by seven states: Zamfara for 117 km (73 miles) and Katsina for 161 km (100 miles) to the north, Kano to the north-east for 255 km, Bauchi and Plateau to the east, Nasarawa and Abuja Federal Capital Territory (for 45 km) to the south, and Niger to the west. The Kaduna state is located between latitude 10°38'58" N and 10°25'36" N and to longitude 7°22'14" E and 7°32'00" E.

The state was ranked number four by the total area of land and number three by population.
The Kaduna River, a tributary of the Niger River, flows through the state. There are rocky stones in Zaria and Kogoro Hill. Many communities are prone to seasonal flooding during the rainy season.
Climate
The rainy season in Kaduna is hot, humid, and cloudy, while the dry season is hot and partly cloudy. Throughout the year, the temperature rarely falls below 50 °F or rises above 102 °F, usually ranging between 55 °F and 95 °F.

Government
The current governor of Kaduna State is legally under the control of Kaduna State Executives, Kaduna State House of Assembly and Kaduna State Judiciary. The current elected governor of the state is Senator Uba Sani and his deputy is Hadiza Sabuwa Balarabe. In the state there 14 ministries that operate with the state government to improve the state: Ministries of Kaduna State. Within each Ministry, there are multiple agencies with regulatory authority, such as the Kaduna State Environmental Protection Authority which oversees waste, water, and other environmental quality issues.
Local government areas
Kaduna State consists of 23 local government areas. They are:
Economics
The Kaduna State economy was ranked 15th largest state in the Nigerian economy from 2002 to 2008, and it made up 3.3% of Nigerian GDP. While agriculture contributed 30% of SGDP in Kaduna. Kaduna state cultivate cotton and peanuts (groundnuts) for exporting and domestic extraction of Peanut oil. In the state, there is the National Institute of Leather and Technology, to improve modern technology and traditional method.

Media
In Kaduna State, there are many means of communication through mass media, broadcasting, internet communication and banking transactions. In Kaduna State, there are 21 radio stations and more than 4 television stations broadcasting. Many of them are owned by the state government or federal government, and a few are private. The following is a list of radio stations in Kaduna:
Ethnic groups
Kaduna State is populated by about 59 to 63 different ethnic groups, if not more, with the exactitude of the number requiring further verification through fieldwork. The question as in the last paragraph with the Hausa and Fulani as the dominant ethnic groups followed by at least 60 others. These groups include:
Religion
The main religions in Kaduna State are Islam and Christianity while some minority ethnic groups practice traditional worshipping, mostly in the southern area of the state. The people of Kaduna are very religious, causing two religious crises in 2001 and 2002, the Miss World riots.
Languages
Other languages in Kaduna State are Bacama, Firan, and Sambe. Almost all of these languages are spoken in Southern Kaduna.
Education
Kaduna is one of the largest centres of education in Nigeria. The slogan of the state is Center of Learning because of the presence of many institution like Ahmadu Bello University (established 1962). There are many government schools, include primary schools and secondary schools. All secondary schools in Kaduna are owned by the state government, federal government or private organisations. there are many tertiary institutions in the state. The state also has colleges for transportation and agriculture.
Universities and institutes
Ahmadu Bello University, Zaria
Air Force Institute of Technology (Nigeria)
Federal College of Education, Zaria (now known as Federal University of Education, Zaria)
Federal University of Applied Sciences Kachia (formerly Nok University Kachia)
Greenfield University Kaduna
Kaduna Polytechnic (1968), Kaduna
Kaduna State University
National Open University of Nigeria, Kaduna Study Center
Nigerian College of Aviation Technology, Palladan Zaria
Nigerian Defence Academy (NDA), Kaduna
Nuhu Bamalli Polytechnic, Zaria
Secondary schools and colleges
Barewa College
Command Secondary School
Essence International School
Nigerian Military School
Nigerian Tulip International Colleges
Adeyemo college
Air force secondary school
Destiny college
FGC, Kaduna
Transportation
Federal Highways are:
A2 north from Abuja FCT at Sabon Wuse as the Abuja-Kaduna-Zaria Expressway via Kaduna and Zaria to Kano State as the Kaduna-Kano Rd or Zaria Rd at Gidan Mallam Idi (part of the African Unity Road or Trans-Sahara Highway or Trans African 2: TAH2),