51247 ZIP Code Profile, Map, Data & Demographics

ZIP Code Type: STANDARD
County: Sioux County
Centroid: Latitude 43.205, Longitude -96.291
Time Zone: Central Time Zone (UTC -6 hours)
Observes DST: Yes

ZIP Code 51247 has segments in 2 Counties (Lyon, Sioux).

Businesses Addresses: 216
PO Box Addresses: 23
Residential Addresses: 2,014

Multi-Family Addresses: 148
Single Family Addresses: 1,866

The ZIP Code maps and database are updated 4 times per year.
Database updated: April 1, 2025, Maps updated: May 1, 2024.

Rock Valley, IA 51247 Data & Demographics (As of July 1, 2024)

POPULATION
Total Population	5,499 (100%)
Population in Households	5,404 (98.3%)
Population in Families	4,803 (87.3%)
Population in Group Quarters¹	95 ( 1.7%)
Population Density	46
Diversity Index²	50


INCOME
Median Household Income	$83,230
Average Household Income	$110,301
% of Income for Mortgage⁴	19%
Per Capita Income	$39,054
Wealth Index⁵	96
Socioeconomic Status Index⁶	Moderate (59.1)

HOUSING
Total HU (Housing Units)	2,062 (100%)
Owner Occupied HU	1,594 (77.3%)
Renter Occupied HU	352 (17.1%)
Vacant Housing Units	116 ( 5.6%)
Median Home Value	$245,668
Average Home Value	$338,614
Housing Affordability Index³	128

HOUSEHOLDS
Total Households	1,946
Average Household Size	2.78
Family Households	1,380
Average Family Size	3.00

NOTES

Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

Rock Valley, IA 51247 - Peer Comparisons by Rank and Percentile

The table below compares 51247 to the other 966 ZIP Codes in Iowa by rank and percentile using July 1, 2024 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

GROWTH RATE / YEAR	2020-2024	2024-2029
Population	0.02%	-0.01%
Households	0.30%	0.17%
Families		0.19%
Median Household Income		3.04%
Per Capita Income		2.83%
Owner Occupied HU		0.60%

Variable Description	Rank	Percentile
Total Population	# 136	86th
Population Density	# 293	70th
Median Household Income	# 278	71st
Housing Affordability Index	# 368	38th
Per Capita Income	# 508	48th
Diversity Index	# 58	94th

51247 ZIP Code Profile, Map, Data & Demographics

ZIP Code 51247: Basic Data & USPS Preferred City Name

Rock Valley, IA 51247 Data & Demographics (As of July 1, 2024)

POPULATION

INCOME

HOUSING

HOUSEHOLDS

GROWTH RATE / YEAR

Rock Valley, IA 51247 - Peer Comparisons by Rank and Percentile

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