# Total Population in Service-area

**URL:** <https://ask.openrouteservice.org/t/total-population-in-service-area/5945>\
**Category:** openrouteservice\
**Created:** [April 3, 2024, 9:59am UTC](https://ask.openrouteservice.org/t/total-population-in-service-area/5945 "2024-04-03T09:59:18Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![edudzi\_korku](https://ask.openrouteservice.org/user_avatar/ask.openrouteservice.org/edudzi_korku/32/2945_2.png) [@edudzi\_korku](https://ask.openrouteservice.org/u/edudzi_korku)\
**Post date:** [April 3, 2024, 9:59am UTC](https://ask.openrouteservice.org/t/total-population-in-service-area/5945/1 "2024-04-03T09:59:18Z")

</div>

Just curious…How does ORS calcalute the total population in a service-area when the Isochrone functionality in QGIS is used?

---

<div class="post-metadata">

**Author:** ![amandus](https://ask.openrouteservice.org/user_avatar/ask.openrouteservice.org/amandus/32/669_2.png) [@amandus](https://ask.openrouteservice.org/u/amandus)\
**Post date:** [April 3, 2024, 10:30am UTC](https://ask.openrouteservice.org/t/total-population-in-service-area/5945/2 "2024-04-03T10:30:32Z")

</div>

Hi @edudzi_korku,

[This SQL query](https://github.com/GIScience/openrouteservice/blob/14c28f5529ce1b69ce10a6003425f9a1b9509f03/ors-engine/src/main/java/org/heigit/ors/isochrones/statistics/postgresql/PostgresSQLStatisticsProvider.java#L137-L141) is done on the [GHSL population data](https://giscience.github.io/openrouteservice/run-instance/data#population) we use.

Best regards

---

<div class="post-metadata">

**Author:** ![edudzi\_korku](https://ask.openrouteservice.org/user_avatar/ask.openrouteservice.org/edudzi_korku/32/2945_2.png) [@edudzi\_korku](https://ask.openrouteservice.org/u/edudzi_korku)\
**Post date:** [April 3, 2024, 10:55am UTC](https://ask.openrouteservice.org/t/total-population-in-service-area/5945/3 "2024-04-03T10:55:27Z")

</div>

Thank you ❤ ❤ ❤