Table 5. Number of PHC centers, population, rate of PHCs per 10,000 populations, cumulative population, and cumulative PHCs of 20 Saudi health regions in 2019.
Pi: percentage of primary healthcare centers; Si: cumulative population; PHC: primary healthcare
| Health regions | PHCs No. | Percentage of PHCs (Pi) | Cumulative PHCS | Population | Percentage of population | Rate of PHCs per 10,000 population | Cumulative population (Si) | Si-1 | (Si-1+Si) | (Si-1+Si)*Pi |
| Riyadh | 415 | 18.4 | 18.4 | 8,660,885 | 21.1881144 | 0.479 | 21.188114 | 0 | 21.18811 | 389.8613 |
| Makkah | 80 | 3.5 | 21.9 | 9,033,491 | 22.0996631 | 0.088 | 43.287778 | 21.188114 | 64.47589 | 225.6656 |
| Jeddah | 95 | 4.2 | 26.1 | 3,567,854 | 8.72844966 | 0.266 | 52.016227 | 43.287778 | 95.304 | 400.2768 |
| Taif | 106 | 4.7 | 30.8 | 992,345 | 2.42768717 | 1.06 | 54.443914 | 52.016227 | 106.4601 | 500.3627 |
| Madinah | 149 | 6.6 | 37.4 | 2,239,923 | 5.47978004 | 0.665 | 59.923694 | 54.443914 | 114.3676 | 754.8262 |
| Qaseem | 156 | 6.9 | 44.3 | 1,488,285 | 3.64096196 | 1.04 | 63.564656 | 59.923694 | 123.4884 | 852.0696 |
| Eastern region | 137 | 6.1 | 50.4 | 5,148,598 | 12.5956047 | 0.266 | 76.160261 | 63.564656 | 139.7249 | 852.322 |
| Al-Ahsa | 70 | 3.1 | 53.5 | 1,082,467 | 2.64816293 | 0.646 | 78.808424 | 76.160261 | 154.9687 | 480.4029 |
| Hafar Al-Batin | 37 | 1.6 | 55.1 | 389,993 | 0.95408452 | 0.948 | 79.762508 | 78.808424 | 158.5709 | 253.7135 |
| Aseer | 258 | 11.4 | 66.5 | 2,308,329 | 5.64712947 | 1.11 | 85.409638 | 79.762508 | 165.1721 | 1882.962 |
| Bishah | 76 | 3.4 | 69.9 | 205,346 | 0.50236143 | 3.70 | 85.911999 | 85.409638 | 171.3216 | 582.4936 |
| Tabouk | 96 | 4.3 | 74.2 | 949,612 | 2.32314454 | 1.01 | 88.235144 | 85.911999 | 174.1471 | 748.8327 |
| Hail | 109 | 4.8 | 79 | 731,147 | 1.7886886 | 1.49 | 90.023833 | 88.235144 | 178.259 | 855.6431 |
| Northern region | 43 | 1.9 | 80.9 | 383,051 | 0.93710151 | 1.12 | 90.960934 | 90.023833 | 180.9848 | 343.8711 |
| Jazan | 168 | 7.4 | 88.3 | 1,637,361 | 4.00566365 | 1.02 | 94.966598 | 90.960934 | 185.9275 | 1375.864 |
| Najran | 69 | 3.1 | 91.4 | 608,467 | 1.48856247 | 1.13 | 96.45516 | 94.966598 | 191.4218 | 593.4074 |
| Al-Bahah | 94 | 4.2 | 95.6 | 497,068 | 1.21603435 | 1.89 | 97.671195 | 96.45516 | 194.1264 | 815.3307 |
| Al-Jouf | 41 | 1.8 | 97.4 | 531,952 | 1.30137507 | 0.77 | 98.97257 | 97.671195 | 196.6438 | 353.9588 |
| Qurayyat | 19 | 0.8 | 98.2 | 147,550 | 0.36096846 | 1.28 | 99.333538 | 98.97257 | 198.3061 | 158.6449 |
| Qunfudah | 43 | 1.9 | 100.1 | 272,424 | 0.66646202 | 1.57 | 100 | 99.333538 | 199.3335 | 378.7337 |
| Total | 2261 | - | - | - | - | - | - | - | - | 12799.24 |