Age of householder
Per the latest American Community Survey by the Census Bureau, Rolla sees its highest median household income among householders in the age group of 45 to 64 years old, at $77,691. Here are the key highlights for income distribution by age:
- In terms of income distribution across age cohorts, in Rolla, the median household income stands at $77,691 for householders within the 45 to 64 years age group, followed by $52,470 for the 25 to 44 years age group. Notably, householders within the 65 years and over age group, had the lowest median household income at $52,019.
- Notably, household income for individuals within the 65 years and over age group demonstrated a remarkable increase of $33,194(176.33%), escalating from a median of $18,825 in 2011 to $52,019 in 2021.
- 17(4.72%) households where the householder is under 25 years old.
- 134(37.22%) households with a householder aged between 25 and 44 years.
- 99(27.50%) households with a householder aged between 45 and 64 years.
- 110(30.56%) households where the householder is over 65 years old.
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Gender
In Rolla, the population consists of 615 males (51.59%) and 577 females (48.41%). Here are the primary highlights from the gender-based income distribution analysis:
- In Rolla, the median income for all workers aged 15 years and older, regardless of work hours, was $57,293 for males and $37,067 for females.
- However, when specifically considering full-time, year-round workers within the same age group, the median income was $60,693 for males and $52,863 for females.
- In Rolla, the median income for all workers aged 15 years and older, regardless of work hours, was $57,293 for males and $37,067 for females.
- In Rolla, among full-time, year-round workers aged 15 years and older, males earned a median income of $60,693, while females earned $52,863, resulting in a 13% gender pay gap among full-time workers. This illustrates that women earn 87 cents for each dollar earned by men in full-time positions. While this gap shows a trend where women are inching closer to wage parity with men, it also exhibits a noticeable income difference for women working full-time in the city of Rolla.
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Race
In Rolla, the population is predominantly American Indian and Alaska Native, constituting 50.50% of the total residents. Here are the key highlights from the analysis of income distribution by race:
- The median household income for American Indian and Alaska Native households is $49,992.
- In Rolla, despite the American Indian and Alaska Native population being the most populous, it is worth noting that White households actually reports the highest median household income, with a median income of $68,571. This reveals that, while American Indian and Alaska Natives may be the most numerous in Rolla, White households experience greater economic prosperity in terms of median household income.
- In Rolla, the median household income for the households where the householder is White increased by $28,255(70.08%), between 2011 and 2021. The median household income, in 2022 inflation-adjusted dollars, was $40,316 in 2011 and $68,571 in 2021.
- Even though there is a population where the householder is Black or African American, there was no median household income reported by the U.S. Census Bureau for both 2011 and 2021.
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Year by year
Rolla, ND median household income trends by year, family type and household size (2010-2021):
- From 2010 to 2021, the median household income for Rolla increased by $26,452 (73.59%), as per the American Community Survey estimates.
- Between 2010 and 2021, median household income, adjusted for 2022 inflation, experienced growth year by year for 8 years and declined for 3 years.
- The most significant year-by-year growth occured from 2017 to 2018, when the median household income increased by 18,622 (from $48,653 to $67,275). Similarly the most substantial year-by-year decline occured from 2020 to 2021, when the median household income decreased by 4,599 (from $66,997 to $62,398).
- It then further decreased to 68,522 for 4-person households, the largest household size for which the bureau reported a median household income.
- With a Gini coefficient of 0.4449, it is evident that income distribution in Rolla, ND exihibits characterstics of moderate inequality .
- For the family households, the median income (in 2022 inflation-adjusted dollars) was $69,102. For the non-family households, the median income (in 2022 inflation-adjusted dollars) was $33,328.
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