{
  "reviewed": "2026-10-25",
  "scope": "Whole administrative units, never ethnic output or population totals",
  "gdp_note": "NGF 2023 source-specific figures; price basis and method not stated. Lagos Bureau reports a different value. No cross-series GDP growth calculated.",
  "igr_note": "NBS 2025 release, published 24 September 2026; current naira, government revenue, not GDP.",
  "states": [
    {
      "name": "Lagos",
      "pop2006": 9113605,
      "pop2023": 13710862,
      "gdp2023_ngf_trillion": 33.051651,
      "tfr2015": 3.82,
      "tfr2022": 3.28,
      "assembly_seats": 40,
      "capital": "Ikeja",
      "created": "1967",
      "context": "Èkó and a cosmopolitan population. State, metropolis and historic city are different geographical units.",
      "known": "Finance, trade, ports and logistics, manufacturing, technology and entertainment.",
      "assembly_url": "https://lagoshouseofassembly.gov.ng/home/wp-content/uploads/2024/05/10-Assembly.pdf",
      "profile_url": "https://www.publicfinance.ngf.org.ng/state-explorer/lagos/",
      "igr": {
        "2022": 651145633085.3,
        "2023": 815864679971.27,
        "2024": 1261556415048.56,
        "2025": 1769194412060.4
      }
    },
    {
      "name": "Ogun",
      "pop2006": 3751140,
      "pop2023": 6512195,
      "gdp2023_ngf_trillion": 12.251585,
      "tfr2015": 4.74,
      "tfr2022": 3.35,
      "assembly_seats": 26,
      "capital": "Abeokuta",
      "created": "1976",
      "context": "Egba, Ìjẹ̀bú, Remo and Yewa communities; an industrial and agricultural corridor adjoining Lagos.",
      "known": "Industrial estates, cement and food manufacturing; cassava, rice and poultry.",
      "assembly_url": "https://www.ogha.og.gov.ng/members",
      "profile_url": "https://www.publicfinance.ngf.org.ng/state-explorer/ogun/",
      "igr": {
        "2022": 120584157140.78,
        "2023": 146875041475.36,
        "2024": 194933884872.57,
        "2025": 252355976698.73
      }
    },
    {
      "name": "Oyo",
      "pop2006": 5580894,
      "pop2023": 8127483,
      "gdp2023_ngf_trillion": 11.792946,
      "tfr2015": 4.53,
      "tfr2022": 4.27,
      "assembly_seats": 32,
      "capital": "Ibadan",
      "created": "1976; Osun separated in 1991",
      "context": "Ìbàdàn, Ọ̀yọ́ and Òkè-Ògùn; a large inland network of cities, towns and farms.",
      "known": "Education, health and services in Ibadan; cassava, cocoa, poultry and agro-processing.",
      "assembly_url": "https://oyostate.gov.ng/makinde-deputy-oyo-assembly-members-elect-receive-certificates-of-return/",
      "profile_url": "https://www.publicfinance.ngf.org.ng/state-explorer/oyo/",
      "igr": {
        "2022": 62246150460.36,
        "2023": 52745497059.04,
        "2024": 65287038267.92,
        "2025": 103246442472.57
      }
    },
    {
      "name": "Osun",
      "pop2006": 3416959,
      "pop2023": 4494970,
      "gdp2023_ngf_trillion": 7.417106,
      "tfr2015": 3.98,
      "tfr2022": 3.75,
      "assembly_seats": 26,
      "capital": "Osogbo",
      "created": "1991",
      "context": "Ilé-Ifẹ̀, Òṣogbo, Ìjẹ̀ṣà and Ìgbómìnà communities; historic urban centres and rural hinterlands.",
      "known": "Cocoa, oil palm, cassava, gold, trade and cultural tourism.",
      "assembly_url": "https://osha.osunstate.gov.ng/",
      "profile_url": "https://www.publicfinance.ngf.org.ng/state-explorer/osun/",
      "igr": {
        "2022": 24605340053.84,
        "2023": 27925037155.17,
        "2024": 54767845323.88,
        "2025": 56843623771.08
      }
    },
    {
      "name": "Ondo",
      "pop2006": 3460877,
      "pop2023": 5422399,
      "gdp2023_ngf_trillion": 8.77143,
      "tfr2015": 4.73,
      "tfr2022": 3.95,
      "assembly_seats": 26,
      "capital": "Akure",
      "created": "1976; Ekiti separated in 1996",
      "context": "Oǹdó, Akure, Owo, Akoko and coastal communities; substantial internal diversity.",
      "known": "Cocoa, oil and gas, fisheries and Idanre tourism; bitumen is a resource opportunity, not a claim of full commercial production.",
      "assembly_url": "https://ondostate.gov.ng/house_members",
      "profile_url": "https://www.publicfinance.ngf.org.ng/state-explorer/ondo/",
      "igr": {
        "2022": 32640660900.25,
        "2023": 41501551387.36,
        "2024": 48639083021.5793,
        "2025": 60320737217.15
      }
    },
    {
      "name": "Ekiti",
      "pop2006": 2398957,
      "pop2023": 3667047,
      "gdp2023_ngf_trillion": 4.616878,
      "tfr2015": 4.41,
      "tfr2022": 4.32,
      "assembly_seats": 26,
      "capital": "Ado-Ekiti",
      "created": "1996",
      "context": "Èkìtì towns and kingdoms; a separate state since 1996, previously part of Ondo.",
      "known": "Agriculture, education and public service; cocoa, rice, cassava, oil palm and tourism.",
      "assembly_url": "https://www.ekitistate.gov.ng/executive-council/mdas/house-of-assembly",
      "profile_url": "https://www.publicfinance.ngf.org.ng/state-explorer/ekiti/",
      "igr": {
        "2022": 17029726605.18,
        "2023": 32096050316.1,
        "2024": 35213748270.98,
        "2025": 57091304238.63
      }
    },
    {
      "name": "Kwara",
      "pop2006": 2365353,
      "pop2023": 3626882,
      "gdp2023_ngf_trillion": 7.87071,
      "tfr2015": 5.12,
      "tfr2022": 5.55,
      "assembly_seats": 24,
      "capital": "Ilorin",
      "created": "1967; boundaries later changed",
      "context": "Offa, Oró, Edidi and other Yorùbá communities share a multiethnic state with other peoples.",
      "known": "Agriculture, commerce, services, agro-processing and aviation-related facilities.",
      "assembly_url": "https://hoa.kw.gov.ng/",
      "profile_url": "https://www.publicfinance.ngf.org.ng/state-explorer/kwara/",
      "igr": {
        "2022": 35756949370.01,
        "2023": 59642678119.83,
        "2024": 71197075565.91,
        "2025": 95356710598.87
      }
    },
    {
      "name": "Kogi",
      "pop2006": 3314043,
      "pop2023": 4557686,
      "gdp2023_ngf_trillion": 5.962636,
      "tfr2015": 4.42,
      "tfr2022": 4.96,
      "assembly_seats": 25,
      "capital": "Lokoja",
      "created": "1991",
      "context": "Okun and other Yorùbá communities form part of a multiethnic state; the whole state is not Yorùbáland.",
      "known": "Cashew and other agriculture; iron ore, limestone and cement, including the Itakpe and Obajana industrial connections.",
      "assembly_url": "https://kogistate.gov.ng/executives-will-continue-to-partner-legislature-for-states-rapid-devt-affirms-gov-ododo/",
      "profile_url": "https://www.publicfinance.ngf.org.ng/state-explorer/kogi/",
      "igr": {
        "2022": 18214434263.83,
        "2023": 26780470381.06,
        "2024": 32012618177.8,
        "2025": 43941056863.67
      }
    },
    {
      "name": "Edo",
      "pop2006": 3233366,
      "pop2023": 4874613,
      "gdp2023_ngf_trillion": 7.543751,
      "tfr2015": 4.55,
      "tfr2022": 4.46,
      "assembly_seats": 24,
      "capital": "Benin City",
      "created": "1991, from Bendel",
      "context": "Edo is included as a neighbouring comparison requested by Lekan. Benin City and Edo/Bini heritage are not relabelled as Yorùbá; historical connections do not erase distinct identities.",
      "known": "Rubber, oil palm, cocoa, timber, agro-processing, oil and gas; Benin art and cultural heritage.",
      "assembly_url": "https://edostate.gov.ng/christmas-year-2025-will-be-better-for-edo-people-gov-okpebholo-assures/",
      "profile_url": "https://www.publicfinance.ngf.org.ng/state-explorer/edo/",
      "igr": {
        "2022": 47458128071.16,
        "2023": 64671497361.77,
        "2024": 91151908548.19,
        "2025": 132208875552.12
      }
    }
  ],
  "sources": {
    "population2006": "https://nigerianstat.gov.ng/download/474",
    "population2023": "https://microdata.nigerianstat.gov.ng/index.php/catalog/182/download/1392/Demographic%20Bulletin%202023.pdf",
    "fertility": "https://nigerianstat.gov.ng/pdfuploads/DEMOGRAPHIC_BULLETIN_2022_FINAL.pdf",
    "igr": "https://microdata.nigerianstat.gov.ng/index.php/catalog/170/related-materials",
    "migration": "https://nigeria.un.org/sites/default/files/2023-12/INTERNAL%20MIGRATION%20TRENDS%20IN%20NIGERIA_Updated.pdf",
    "lagos_gdp": "https://lagosmepb.org/wp-content/uploads/2025_lagos_economic_development_update.pdf",
    "benin": "https://data.worldbank.org/country/benin",
    "togo": "https://data.worldbank.org/country/togo"
  }
}
