Ilorin's 2020 population is now estimated at 949,866. In 1950, the population of Ilorin was 113,565. Ilorin has grown by 93,884 since 2015, which represents a 2.10% annual change. These population estimates and projections come from the latest revision of the UN World Urbanization Prospects. These estimates represent the Urban agglomeration of Ilorin, which typically includes Ilorin's population in addition to adjacent suburban areas.
| Year | Population | Growth Rate (%) | Growth |
|---|---|---|---|
| 2035 | 1,556,961 | 3.46% | 243,207 |
| 2030 | 1,313,754 | 3.62% | 213,795 |
| 2025 | 1,099,959 | 2.98% | 150,093 |
| 2020 | 949,866 | 2.10% | 93,884 |
| 2015 | 855,982 | 2.04% | 82,039 |
| 2010 | 773,943 | 2.04% | 74,177 |
| 2005 | 699,766 | 2.03% | 67,050 |
| 2000 | 632,716 | 2.04% | 60,657 |
| 1995 | 572,059 | 2.14% | 57,462 |
| 1990 | 514,597 | 2.41% | 57,693 |
| 1985 | 456,904 | 3.25% | 67,549 |
| 1980 | 389,355 | 3.82% | 66,569 |
| 1975 | 322,786 | 3.82% | 55,173 |
| 1970 | 267,613 | 3.82% | 45,742 |
| 1965 | 221,871 | 4.38% | 42,801 |
| 1960 | 179,070 | 4.66% | 36,470 |
| 1955 | 142,600 | 4.66% | 29,035 |
| 1950 | 113,565 | 0.00% |