Are there any free, publicly available datasets for Singapore?
Lots of Spatial Data for Singapore
and Census Data
Web Mapping available here:
From the Singapore 2014 Master Plan:
The above is provided in KML. The above also links to Region Boundary (5 regions) and the more granular Subzone Boundary files (323 subzones).
There's also the Planning Area Census 2010 (also in KML) which has more useful polygon labels, although they're embedded in markup, e.g.:
Nevertheless, that's better than the Master Plan KML files which only have labels like
Finally, Singstat (www.singstat.gov.sg/statistics/browse-by-theme/geographic-distribution) has useful datasets by geography covering a variety of topics including census figures.