SECTION 4: RISK ASSESSMENT
The purpose of the PRI is to categorize and prioritize all potential hazards for the Wake County planning area as high, moderate, or low risk. The summary hazard classifications generated through the use of the PRI allows for the prioritization of the high and moderate hazard risks for mitigation planning purposes.
4.4 ASSET INVENTORY NCEM ’s IRISK database provided the asset inventory used for this vulnerability assessment. Population counts in IRISK are derived from 2020 census data and include a breakdown of two subpopulations assumed to be at greater risk to natural hazards than the general population: elderly (ages 65 and older) and children (under the age of 5). These population counts are detailed by jurisdiction in Table 4.6. It should be noted that population counts in IRISK include each community’s extra -territorial jurisidiction as delineated in a spatial database of political areas maintained by NCEM. As a result, the population estimates in IRISK are higher than the Census population estimates for some communties because Census population estimates are based on municipal boundaries. Table 4.6 – Population Counts with Vulnerable Population Breakdown
2020 Census Population
Elderly (Age 65 and Over)
Children (Age 5 and Under)
Jurisdiction
Raleigh
476,892 57,525 164,869 32,177 35,232 30,885 29,077 21,999 12,236 38,203
53,945 5,963 19,866
26,904
Apex Cary
3,912 9,432 2,204 2,863 2,254 1,917 1,627
Fuquay-Varina
4,432 5,015 2,685 3,207 1,533 1,401 4,777 1,361
Garner
Holly Springs Knightdale
Morrisville Rolesville
919
Wake Forest
2,891
Wendell Zebulon
8,423 5,751
418 437
948
Wake County (Unincorporated Area)
230,494
29,196
14,301
TOTAL
1,143,763
134,329
70,079
Source: NCEM IRISK Database; 2000, 2010, 2020 Decennial Census
The HMPC noted that Wake County has experienced significant growth since the 2020 Census. Table 4.7 details the estimated total population by jurisdiction from the 2010 and 2020 Census and the 2022 American Community Survey and includes a breakdown of percent change for the jurisdictional populations from 2010 to 2020. While the 2022 counts are not reflected in IRISK, they provide additional
context for interpreting the IRISK vulnerability estimates. Table 4.7 – Population Counts by Jurisdiction, 2010 - 2020
2010 Census Population
2020 Census Population
% Change 2010-2020
2022 ACS Population
Jurisdiction
Raleigh
420,104
476,892 57,525 164,869 32,177 35,232 30,885
14% 38% 20% 29% 14% 20%
465,517 65,541 174,880 35,428 31,684 42,023
Apex Cary
41,724
137,544 25,023 30,981 25,790
Fuquay-Varina
Garner
Holly Springs
Wake County, NC Multi-Jurisdictional Hazard Mitigation Plan
WSP June 2024 Page 72
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