Boone County* - Unincorporated

WV PDC Region: 3

(Unincorporated Area Scale, All Risk Indicators Report)

July 2025

Cumulative Flood Risk Score

98.1% Very High

Ranks 2nd of 55 unincorporated areas in the state

11 of 25 risk indicators among the top 10% unincorporated areas.
15 of 25 risk indicators among the top 20% unincorporated areas.

View Risk Map

View Flood Tool

Noteworthy Flood Risk Facts for Boone County* - Unincorporated

Table 1. Noteworthy Flood Risk Facts: A Cumulative Flood Risk Index of 25 flood factors reveals that Boone County* - Unincorporated ranks 2nd of 55 unincorporated areas in the state with a Cumulative Flood Risk Score of 98.1%. Below are all 25 flood risk indicators used in the risk index. Click on the More Info link for rationale and recommendations of each indicator.

Risk Indicator	Description	More Info	Supplementary External Links
Floodplain Area	7,596 acres of high-risk floodplain.	Click for more information.	Floodplain Area by Community Floodplain Area by Unincorporated Area
Floodplain Length	285.2 miles of high-risk floodplain.	Click for more information.	Floodplain Length by Community Floodplain Length by Unincorporated Area
Flood Declared Disasters	20 flood declared disasters since 1953.	Click for more information.
Flood Depth Median	2.3 feet median base flood depth.	Click for more information.	Media Flood Depth by Community (FEMA 1% Flood) Media Flood Depth by Community (FEMA 1% Flood) Percent Rank Classification
Building Floodplain Count	2,572 buildings in a high-risk flood zone.	Click for more information.	Building Count in SFHA by Community Building Count in SFHA by Unincorporated Area Building Count in SFHA by Community (Percent Rank Classification) Building Count in SFHA by Unincorporated Area (Percent Rank Classification)
Building Floodway Count	417 buildings in the regulatory floodway or main river channel.	Click for more information.	Floodway Building Count by Community Floodway Building Count by Community (Percent Rank Classification) Floodway Building Ratio by Unincorporated Area Floodway Building Ratio by Community
Building Floodplain Ratio	24.4% of floodplain buildings to total buildings.	Click for more information.	Floodplain Building Ratio by Unincorporated Area
Building Density	0.34 buildings/acre density in floodplain.	Click for more information.	Building Density in SFHA by Community Building Density in SFHA by Unincorporated Area
Building Median Value	$30,900 median building value in floodplain.	Click for more information.	Building Median Value by Community Building Median Value Residential by Community Building Exposure Low Values <= $10K by Community
Bldg. Mobile Homes Ratio	38.0% of single-family dwellings in floodplain are manufactured homes.	Click for more information.	Mobile Homes Ratio by Community Mobile Homes Count by Community
Bldg. Subgrade Basements Ratio	14.1% of floodplain buildings have subgrade basements.	Click for more information.	Building Subgrade Basement Ratio by Community Building Subgrade Basement Ratio by Community (Percent Rank)
Building 1-Story Ratio	95.0% of floodplain buildings have only one story.	Click for more information.	Building One-Story Ratio by Community Building One-Story Ratio by Community (Percent Rank)
Bldg. Year Pre-FIRM Ratio	81.5% of floodplain buildings are Pre-FIRM or built with no FIRM in effect.	Click for more information.	Building Year Pre-FIRM Ratio by Community Building Year Pre-FIRM Ratio by Unincorporated Area Building Year Pre-FIRM Ratio by Community (Percent Rank) Building Year Pre-FIRM Ratio by Unincorporated Area (Percent Rank) Building Year Median Value by Community (Natural Break)
Bldg. Year Minus Rated Post-FIRM Ratio	6.0% of floodplain buildings are Post-FIRM with lowest floor below BFE.	Click for more information.	Building Year Post-FIRM Minus-Rated Building Ratio by Community Building Year Post-FIRM Minus-Rated Building Ratio by Unincorporated Area Building Year Post-FIRM Minus-Rated Building Ratio by Community (Percent Rank) Building Year Post-FIRM Minus-Rated Building Ratio by Unincorporated Area (Percent Rank) Building Year Post-FIRM Building Ratio by Community
Essential Facilities	11 essential facilities in moderate and high risk floodplains.	Click for more information.
Roads Inundated Ratio	18.9% of roads flooded by a 1% annual chance (100-yr) major flood.	Click for more information.	Roads Inundated Ratio for 1% Flood by Community Roads Inundated Ratio for 1% Flood by Unincorporated Area
Community Assets Historical	1 historical assets in floodplain.	Click for more information.	Historical Community Assets Count by Community
Community Assets Non-Historical	76 non-historical assets in floodplain.	Click for more information.
Bldg. Substantial Damage Count	348 bldgs. substantially damaged by a 1% annual chance (100-yr) flood.	Click for more information.	Building Substantial Damage Count by Community (1% Flood) (Percent Rank) Building Substantial Damage Count by 284 Communities (1% Flood) (Percent Rank) Building Substantial Damage Median Percent Damage Estimates by Community (1% Flood) Building Substantial Damage Median Damage Dollar Estimates by Community (1% Flood) Building Substantial Damage Debris Removal Estimates by Community (1% Flood)
Bldg. Substantial Damage Ratio	13.5% of buildings in floodplain substantially damaged by major storm.	Click for more information.	Building Substantial Damage to Total SFHA Structures Ratio by Community (1% Flood) Building Substantial Damage to Total SFHA Structures Ratio by Community (1% Flood) (Percent Rank)
Bldg. Previous Damage Claims	296 buildings have prior damage claims.	Click for more information.	Building Damage Claims Number by Community (Natural Break) Building Damage Claims Number by Community (Percent Break) Building Damage Claims Amount by Community (Natural Break)
Bldg. Repetitive Loss Structures	69 repetitive loss structures.	Click for more information.	Building Repetitive Loss Structures by Community
Population in Floodplain Ratio	39.3% of the population resides in a high-risk flood zone.	Click for more information.	Population Ratio by Community Population Ratio by Community (Percent Rank)
Population Displaced Ratio	27.5% of population displaced by a 1% annual chance (100-yr) flood event.	Click for more information.	Population Estimated Requiring Short-Term Shelter by Community (1% Flood)
WV Social Vulnerability Index	85.2% index score of WV Social Vulnerability.	Click for more information.	Social Vulnerability Index (SVI) by Community (Percent Rank) Social Vulnerability Index (SVI) by Unincorporated Area (Percent Rank) Population Change between Censuses 2010 and 2020 by Community
Cumulative Index	98.1% cumulative risk index score.	Click for more information.	Cumulative Risk Index by Community Cumulative Risk Index by Unincorporated Area

Flood Risk Index Scores for Boone County* - Unincorporated

Table 2. Flood Risk Index Scores: A Cumulative Flood Risk Index of 25 flood factors reveals that Boone County* - Unincorporated ranks 2nd of 55 unincorporated areas in the state with a Cumulative Flood Risk Score of 98.1%. Below are all 25 flood risk indicators used in the risk index with the indicator scores and rankings.

Category	Flood Risk Indicator	Value for Boone County* - Unincorporated	Indicator Score (0 - 100%)	Indicator Rating
Floodplain Characteristics	Floodplain Area Click for more information.	7,596 Acres	50.0%	Moderate
	Floodplain Length Click for more information.	285.2 Miles	50.0%	Moderate
	Flood Declared Disasters Click for more information.	20	85.1%	Very High
	Flood Depth Median Click for more information.	2.3 Ft	62.9%	Relatively High
	Floodplain Characteristics Index, 15th		74.0%	Relatively High
Building Exposure	Building Floodplain Count Click for more information.	2,572	94.4%	VERY HIGH
	Building Floodway Count Click for more information.	417	94.4%	VERY HIGH
	Building Floodplain Ratio Click for more information.	24.4%	100.0%	VERY HIGH
	Building Density Click for more information.	0.34 /Acre	90.7%	VERY HIGH
	Building Exposure Index, 4th		94.4%	VERY HIGH
Building Characteristics	Building Median Value Click for more information.	$30,900	31.4%	Relatively Low
	Bldg. Mobile Homes Ratio Click for more information.	38.0%	87.0%	Very High
	Bldg. Subgrade Basements Ratio Click for more information.	14.1%	14.8%	Very Low
	Building 1-Story Ratio Click for more information.	95.0%	90.7%	VERY HIGH
	Bldg. Year Pre-FIRM Ratio Click for more information.	81.5%	75.9%	Relatively High
	Bldg. Year Minus Rated Post-FIRM Ratio Click for more information.	6.0%	57.4%	Moderate
	Building Characteristics Index, 9th		85.1%	Very High
Critical Infrastructure	Essential Facilities Click for more information.	11	96.2%	VERY HIGH
	Roads Inundated Ratio Click for more information.	18.9%	100.0%	VERY HIGH
	Critical Infrastructure Index, 1st		100.0%	VERY HIGH
Community Assets	Community Assets Historical Click for more information.	1	46.2%	Moderate
	Community Assets Non-Historical Click for more information.	76	96.2%	VERY HIGH
	Community Assets Index, 4th		94.4%	VERY HIGH
Building Damage Loss	Bldg. Substantial Damage Count Click for more information.	348	98.1%	VERY HIGH
	Bldg. Substantial Damage Ratio Click for more information.	13.5%	81.4%	Very High
	Bldg. Previous Damage Claims Click for more information.	296	74.0%	Relatively High
	Bldg. Repetitive Loss Structures Click for more information.	69	66.6%	Relatively High
	Building Damage Loss Index, 9th		85.1%	Very High
People / Social Vulnerabilities	Population in Floodplain Ratio Click for more information.	39.3%	98.1%	VERY HIGH
	Population Displaced Ratio Click for more information.	27.5%	98.1%	VERY HIGH
	WV Social Vulnerability Index Click for more information.	-	85.2%	Very High
	People / Social Vulnerabilities Index, 3rd		96.2%	VERY HIGH
Risk Index	Cumulative Index Click for more information.		98.1%	VERY HIGH

Risk Index Legend

VERY HIGH: 90% - 100%

Very High: 80% - 100%

Relatively High: 60% - 79.9%

Moderate: 40% - 59.9%

Relatively Low: 20% - 39.9%

Very Low: 0% - 19.9%

Flood Risk Indicators of Boone County* - Unincorporated Compared to Other Unincorporated Areas

Table 3. Flood Risk Index Comparison: Flood risk indicator values for Boone County* - Unincorporated compared to descriptive statistics of all unincorporated areas.

Category	Flood Risk Indicator	Value for Boone County* - Unincorporated	Median Value	Mean Value	Min Value	Max Value	State Stats
Floodplain Characteristics	Floodplain Area Click for more information.	7,596 Acres	7,596 Acres	9,042 Acres	850 Acres	26,373 Acres	528,635 Acres
	Floodplain Length Click for more information.	285.2 Miles	285.2 Miles	299.4 Miles	52.7 Miles	823.9 Miles	17,205.1 Miles
	Flood Declared Disasters Click for more information.	20	16	16	9	28	64
	Flood Depth Median Click for more information.	2.3 Ft	2.0 Ft	2.3 Ft	0.7 Ft	5.9 Ft	1.8 Ft

Building Exposure	Building Floodplain Count Click for more information.	2,572	595	1,028	94	7,950	82,408
	Building Floodway Count Click for more information.	417	24	103	0	1,391	8,237
	Building Floodplain Ratio Click for more information.	24.4%	6.1%	7.4%	0.8%	24.4%	7.4%
	Building Density Click for more information.	0.34 /Acre	0.07 /Acre	0.14 /Acre	0.02 /Acre	0.82 /Acre	0.16 /Acre

Building Characteristics	Building Median Value Click for more information.	$30,900	$37,350	$40,199	$13,200	$93,150	$38,200
	Bldg. Mobile Homes Ratio Click for more information.	38.0%	28.9%	29.8%	15.0%	56.6%	27.5%
	Bldg. Subgrade Basements Ratio Click for more information.	14.1%	19.5%	22.2%	9.2%	50.9%	24.8%
	Building 1-Story Ratio Click for more information.	95.0%	89.3%	88.5%	71.5%	96.7%	84.0%
	Bldg. Year Pre-FIRM Ratio Click for more information.	81.5%	74.7%	75.4%	57.0%	95.6%	77.5%
	Bldg. Year Minus Rated Post-FIRM Ratio Click for more information.	6.0%	4.8%	6.9%	0.5%	24.0%	5.8%

Critical Infrastructure	Essential Facilities Click for more information.	11	2	3	0	23	489
	Roads Inundated Ratio Click for more information.	18.9%	5.7%	6.5%	2.5%	18.9%	6.7%

Community Assets	Community Assets Historical Click for more information.	1	1	2	0	26	2,758
	Community Assets Non-Historical Click for more information.	76	16	25	1	149	2,092

Building Damage Loss	Bldg. Substantial Damage Count Click for more information.	348	48	93	3	811	6,493
	Bldg. Substantial Damage Ratio Click for more information.	13.5%	6.9%	10.2%	1.2%	37.6%	7.9%
	Bldg. Previous Damage Claims Click for more information.	296	153	267	32	2,298	27,882
	Bldg. Repetitive Loss Structures Click for more information.	69	43	86	2	1,091	9,698

People / Social Vulnerabilities	Population in Floodplain Ratio Click for more information.	39.3%	10.4%	14.2%	1.1%	46.2%	11.0%
	Population Displaced Ratio Click for more information.	27.5%	5.3%	7.8%	0.6%	30.1%	6.6%
	WV Social Vulnerability Index Click for more information.	85.2%	50.0%	50.0%	0.0%	100.0%	-

General Information Statistics for Boone County* - Unincorporated

Table 4. General Information and comparison statistics for Boone County* - Unincorporated.

	Total Area (ACRES)	Total Structures	Total Population	Population Density (/SQ MILE)	Number of Households	Average Household Size

*Boone County - Unincorporated**	316,637	10,545	17,984	36.4	6,363	2.8

STATE STATS	15,500,454	1,118,761	1,801,049	74.4	711,352	2.5
UNINCORPORATED AREAS STATS:
Median	260,456	11,477	17,179	36.4	6,354	2.6
Mean	276,427	14,199	21,240	60.0	8,180	2.6
Minimum	46,800 (Hancock Uninc)	3,554 (Calhoun Uninc)	3,328 (Tucker Uninc)	6.7 (Pocahontas Uninc)	1,436 (Tucker Uninc)	2.3 (Tucker Uninc)
Maximum	661,204 (Randolph Uninc)	49,661 (Berkeley Uninc)	101,650 (Berkeley Uninc)	322.7 (Berkeley Uninc)	39,255 (Berkeley Uninc)	3.1 (Doddridge Uninc)

Risk Indicator data last updated August 2024