County routes in Rensselaer County, New York, are maintained by the Rensselaer County Highway Department and signed with the Manual on Uniform Traffic Control Devices-standard yellow-on-blue pentagon route marker. Routes generally do not enter cities or incorporated villages, except for CRs 117 & 118 in Valley Falls. County route numbers are assigned in clusters by town, with the number indicating the town that most of the route lies within:1–9: Schodack 15–21: Nassau 23–33: Stephentown 36–42: Berlin 43–44: Poestenkill 45–53: Sand Lake 54–63: East Greenbush 65–76: North Greenbush 79–88: Grafton 90–98: Petersburgh 100–105: Hoosick 109–115, 117–118 and 123: Pittstown 116, 119–122 and 124–127: Schaghticoke 128–145: Brunswick