All incomes in 2022 inflation-adjusted dollars using R-CPI-U-RS. Sources: U.S. Census Bureau, American Community Survey (ACS) 2017-2021 5-Year Estimates
TABLE OF CONTENTS
Gender
In San Marcos, the population consists of 30,786 males (47.50%) and 34,026 females (52.50%). Here are the primary highlights from the gender-based income distribution analysis:
- In San Marcos, the median income for all workers aged 15 years and older, regardless of work hours, was $29,094 for males and $14,906 for females.
- However, when specifically considering full-time, year-round workers within the same age group, the median income was $41,413 for males and $34,189 for females.
- In San Marcos, the median income for all workers aged 15 years and older, regardless of work hours, was $29,094 for males and $14,906 for females.
- In San Marcos, among full-time, year-round workers aged 15 years and older, males earned a median income of $41,413, while females earned $34,189, leading to a 17% gender pay gap among full-time workers. This illustrates that women earn 83 cents for each dollar earned by men in full-time roles. This analysis indicates a widening gender pay gap, showing a substantial income disparity where women, despite working full-time, face a more significant wage discrepancy compared to men in the same roles.

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Race
In San Marcos, the population is predominantly White, constituting 72.43% of the total residents. Here are the key highlights from the analysis of income distribution by race:
- The median household income for White households is $49,431.
- In San Marcos, despite the White population being the most populous, it is worth noting that Two or More Races households actually reports the highest median household income, with a median income of $73,139. This reveals that, while Whites may be the most numerous in San Marcos, Two or More Races households experience greater economic prosperity in terms of median household income.
- In San Marcos, there was no reported median household income for White households in 2012. However, in 2022, the median household income increased to $49,431, marking a significant change.
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
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Year by year
San Marcos, TX median household income trends by year, family type and household size (2010-2021):
- From 2010 to 2021, the median household income for San Marcos increased by $9,867 (27.35%), as per the American Community Survey estimates.
- Between 2010 and 2021, median household income, adjusted for 2022 inflation, experienced growth year by year for 7 years and declined for 4 years.
- The most significant year-by-year growth occured from 2016 to 2017, when the median household income increased by 3,718 (from $37,897 to $41,615). Similarly the most substantial year-by-year decline occured from 2020 to 2021, when the median household income decreased by 1,687 (from $47,626 to $45,939).
- It then further decreased to -666,666,666 for 7-person households, the largest household size for which the bureau reported a median household income.
- With a Gini coefficient of 0.4455, it is evident that income distribution in San Marcos, TX exihibits characterstics of moderate inequality .
- For the family households, the median income (in 2022 inflation-adjusted dollars) was $80,097. For the non-family households, the median income (in 2022 inflation-adjusted dollars) was $34,627.

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References
- U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates
- Consumer Price Index retroactive series using current methods (R-CPI-U-RS)