Bolu — province population
Bolu has a recorded base population of 320,824 for the province definition (Population reference date not supplied in local record). GeoNames administrative-unit record; the moving counter uses World Bank national growth (2025); not measured local growth, not new population observations.
At a glance
Separate UN urban-centre definition
Bolu UN urban centre: 140,050 people (2025), smaller than the displayed province figure of 320,824. Separate GeoNames settlement record: 184,682; the UN value is smaller (different boundaries; GeoNames population date unavailable). UN WUP 2025 Degree of Urbanisation; not a municipal/province boundary. Association: name/country/coordinates matched; boundary relationship unverified. No containment claim is made.
Administrative units of Bolu
9 administrative records listed; completeness not established. 9 of 9 population values available; population values and dates not independently verified.
Available-value subtotal: 315,726; not a reconciled total. Shares use the displayed province denominator 320,824; mixed/unknown dates are not comparable. An em dash means missing, not zero.
| Unit | Population | Share | Membership |
|---|---|---|---|
| Bolu | 217,935 | 67.93% | Not independently verified |
| Gerede | 23,547 | 7.34% | Not independently verified |
| Mudurnu | 20,410 | 6.36% | Not independently verified |
| Göynük | 15,590 | 4.86% | Not independently verified |
| Mengen | 14,619 | 4.56% | Not independently verified |
| Yeniçağa | 7,687 | 2.40% | Not independently verified |
| Dörtdivan | 6,688 | 2.08% | Not independently verified |
| Seben | 5,720 | 1.78% | Not independently verified |
| Kıbrıscık | 3,530 | 1.10% | Not independently verified |
Comparable database records
Same definition label: province. Dates/boundaries may still differ; this is not a harmonised international city ranking. Ratios use 320,824 as denominator.
| Place | Population | vs Bolu |
|---|---|---|
| Siirt | 331,311 | +3.3% |
| Nevşehir | 310,011 | −3.4% |
| Amasya | 338,267 | +5.4% |
| Rize | 344,016 | +7.2% |
| Düzce | 351,509 | +9.6% |
About these numbers
Source: GeoNames administrative-unit record. Reference: Population reference date not supplied in local record; GeoNames record modified 2026-04-16 (not the population date). Live method: exponential projection from modelling anchor 2025-07-01 using World Bank national growth (2025); not measured local growth (+0.42% per year). This anchor is a modelling convention, not an observed population date. Tiles, ranks and comparisons use the recorded base figure 320,824, not the ticking estimate. Country/world denominators are World Bank values and can differ in date and method from local/UN values. Ranks cover only records with the same definition label in this database, not all cities in the world.
What changed during your lifetime?
Turn these figures into a private, five-scene personal world story.
Which city boundary are you reading?
This page is a structured reference entry. Its sources, geographic definition and reference dates determine what the figures mean; it is not independent reporting about the causes of change. Read the accompanying explanation before comparing different places or vintages.