Birkenhead's 2020 population is now estimated at 329,045. In 1950, the population of Birkenhead was 315,961. Birkenhead has grown by 2,223 since 2015, which represents a 0.14% 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 Birkenhead, which typically includes Birkenhead's population in addition to adjacent suburban areas.
| Year | Population | Growth Rate (%) | Growth |
|---|---|---|---|
| 2035 | 358,126 | 0.63% | 11,060 |
| 2030 | 347,066 | 0.65% | 11,095 |
| 2025 | 335,971 | 0.42% | 6,926 |
| 2020 | 329,045 | 0.14% | 2,223 |
| 2015 | 326,822 | 0.12% | 1,977 |
| 2010 | 324,845 | 0.18% | 2,828 |
| 2005 | 322,017 | 0.07% | 1,134 |
| 2000 | 320,883 | -0.46% | -7,413 |
| 1995 | 328,296 | -0.33% | -5,522 |
| 1990 | 333,818 | 0.35% | 5,804 |
| 1985 | 328,014 | 0.35% | 5,702 |
| 1980 | 322,312 | 0.35% | 5,606 |
| 1975 | 316,706 | 0.25% | 3,892 |
| 1970 | 312,814 | -0.28% | -4,460 |
| 1965 | 317,274 | -0.21% | -3,401 |
| 1960 | 320,675 | 0.15% | 2,366 |
| 1955 | 318,309 | 0.15% | 2,348 |
| 1950 | 315,961 | 0.00% |