Data Collection Report - Flood Control District of Maricopa County

According to the U.S. Census Bureau, Maricopa county had a medianhousehold income in 1990 that was greater than that of the United Statesand the State of Arizona (See Table V-2). Considering the communitiesincluded in this analysis, Tolleson and Avondale had median householdincome levels in 1990, that were significantly less than the United States,Arizona and Maricopa county. The city of Goodyear had a medianhousehold income in 1990 that was greater than that of the UnitedStates, Arizona and Maricopa county. Finally, the city of Phoenix hada median household income in 1990 that was very close to the averagefor the United States, Arizona and Maricopa county.In terms of ethnic diversity, Maricopa county was less diverse in 1990than both the United States and Arizona (see Table V-2). In 1990,Maricopa county had a greater percentage of Native Americans than theUnited States, but a smaller percentage than Arizona. Also, Maricopacounty had a much greater percentage of people of Hispanic origin thanthe United States, but a slightly smaller percentage than that for Arizona.Similarly, Maricopa county had a greater percentage of people in the“other race” category than the United States, but a slightly smallerpercentage than for Arizona. In 1990, Phoenix was about average inethnic diversity relative to the United States, Arizona and Maricopacounty. There was a greater percentage of African Americans than inMaricopa county, but a lesser percentage than in the United States as awhole. There was a greater percentage of American Indian, Eskimo,Aleut than for the United States, but a smaller percentage of this groupthan the state of Arizona as a whole. The cities of Tolleson, Avondaleand Goodyear are significantly more ethnically diverse (to varyingdegrees) than the United States, Arizona, Maricopa county or Phoenix.Tolleson is by far the most ethnically diverse, with white peoplerepresenting only 39.0%. of the population. The most significant ethnicgroup in Tolleson is persons of Hispanic origin and “other” race.Avondale is between Tolleson and Goodyear in terms of ethnic diversity,with white people representing 58.6% of the population. The mostsignificant ethnic minority groups are persons of Hispanic origin and“other” race. Goodyear, has a relatively high degree of ethnic diversity,but is less diverse than both Tolleson and Avondale. White peoplerepresent 71.5% of the population. Persons of Hispanic Origin are avery significant group in Goodyear.Low Income and Ethnic Minority PopulationsBlock groups within the project area are shown in Figure 18. Thisfigure provides the location and block group ID numbers for all of theblock groups. The first six digits of each ID number refers to the CensusTract number and the last digit of the ID refers to the block groupnumber.Significant Block Groups - Low Median Household IncomeThere were twelve (17.6% of all block groups) Census Block Groupswithin the project area that were found to be significant for low medianhousehold income (see Table V-3). Figure V-4 shows the geographicaldistribution of these block groups within the project area. Twelve of thesixty-eight block groups within the project area met the significancecriteria; having a 1990 median household income of $15,000 or less.These significant block groups are mostly located in the north-easterncorner of the project area, or south-western Phoenix, south of Interstate10 and adjacent to Interstate 17. The exceptions are Census Tract/BlockGroup ID number 0614001, which is located in Avondale and CensusTract/Block Group ID number 6232001, which is located along thesouth-central edge of the project area, within the Gila River IndianCommunity.Table V-3. Block Groups Significant For Low Median HouseholdIncomeBlock GroupID Number1990PopulationMedian HouseholdIncome0614001 1818 $8,5616232001 2806 $8,5721146002 429 $14,8611145002 1573 $14,0911145003 965 $10,0001128002 104 $6,5811128001 631 $11,7051144004 488 $12,3121144001 1189 $12,4281147003 2957 $13,3331147001 860 $12,3681147002 998 $4,999Source: U.S. Census Bureau - STF3A files, 1990Significant Block Groups - High Proportions of Ethnic MinoritiesThere were sixty-one (89.7% of all block groups) Census Block Groupswithin the project area that were found to be significant for highproportions of ethnic minorities (see Table V-4). These block groupshad ethnic minority populations that were at least 10% greater than thepercentages tabulated for the Nation in 1990 in the decennial Census (see“significance criteria” section). Figure V-4 shows the geographicaldistribution of these block groups within the project area. About half ofthe block groups that do not have high proportions of ethnic minoritiesare found along the western edge of the project area, or north-centralGoodyear. The significant block groups are scattered throughout theproject area. The most significant ethnic minority groups are “other”(with 80.8% of all block groups) and Persons of Hispanic Origin (with85.3% of all block groups). High proportions of American Indian,Eskimo, Aleut are found only within the Gila River Indian Community(or Census Tract/Block Group ID number 6232001) on the south-centraledge of the project area. There were no block groups within the projectarea with significant populations of African Americans or Asian, PacificIslanders.DIBBLE & ASSOCIATES 57 DURANGO ADMPDATA COLLECTION REPORT