Volume 50 - Article 23 | Pages 625–642  

Age-heterogamous partnerships: Prevalence and partner differences by marital status and gender composition

By Tony Silva, Christine Percheski

Abstract

Objective: We examine age heterogamy in the United States and its associations with other partnership characteristics following the nationwide legalization of same-sex marriage in 2015.

Methods: We use American Community Survey data for 2017–2021 to examine age gaps in over 3.3 million couples, differentiating by couple gender composition (man-man, man-woman, woman-woman) and marital status (cohabiting, married). We estimate the prevalence of age heterogamy and how it correlates with education, income, and race/ethnicity differences between partners.

Results: The prevalence of age heterogamy and its associations with other partner differences vary by couple gender composition and marital status. Man-man couples have higher rates of age heterogamy than man-woman and woman-woman couples; over three in ten man-man couples had age gaps of at least eight years between partners, with no difference by marital status. Age heterogamy was less common among married than cohabiting man-woman couples. For most couple types, educational and income differences between partners were more common among age-heterogamous partnerships. The prevalence of interracial/interethnic partnerships was higher among age-heterogamous married man-man and man-woman couples but not for woman-woman couples.

Contribution: Man-man couples have higher rates of age heterogamy, and partner differences related to education, income, and race/ethnicity are tied to age heterogamy for man-man couples more strongly than for other couple types. Partnering patterns for man-man couples are distinct from other couple types.

Author's Affiliation

• Tony Silva - University of British Columbia, Canada EMAIL
• Christine Percheski - Northwestern University, United States of America EMAIL

Other articles by the same author/authors in Demographic Research

Fertility change in the American Indian and Alaska Native population, 1980–2010
Volume 37 - Article 1

Most recent similar articles in Demographic Research

Studying individuals in same-sex couples using longitudinal administrative data from Canadian tax records: Opportunities and challenges
Volume 52 - Article 2    | Keywords: administrative data, Canada, Longitudinal Administrative Databank, same-sex couples, sexual orientation, sexual orientation earnings gap, tax data

Left behind single in the partnering market? Entry into cohabiting unions by women and men with low educational attainment across regions of Europe, cohorts 1960 to 1985
Volume 51 - Article 43    | Keywords: cohabitation, education, Europe, European Social Survey, event history analysis, logistic regression, marginalization, partner selection, singlehood, union formation

Between money and intimacy: Brideprice, marriage, and women’s position in contemporary China
Volume 50 - Article 46    | Keywords: brideprice, China, divorce, family, family law, gender inequalities, marriage

Pathways and obstacles to parenthood among women in same-sex couples in Spain
Volume 50 - Article 35    | Keywords: assisted reproduction, family, fertility desires, LGBTQ, parenthood, same-sex couples

Ultra-Orthodox fertility and marriage in the United States: Evidence from the American Community Survey
Volume 49 - Article 29    | Keywords: age at first marriage, American Community Survey (ACS), fertility, Judaism, marriage, religion, total fertility rate (TFR), Ultra-Orthodox Judaism