The ranges are: 1  Normal: Less than 120 over 80 (120/80) 2  Prehypertension: 120-139 over 80-89. 3  Stage 1 high blood pressure: 140-159 over 90-99.  Stage 2 high blood pressure: 160 and above over 100 and 1  above. High blood pressure in people over age 60: 150 and above over 90 and above.