Civic engagement, like the broader phenomenon of social engagement, seems out of keeping with the alienating ethos of incarceration. We sought to learn which demographic and contextual factors predicted one form of civic engagement, voter registration, in a jail-incarcerated female population. A 158-item survey was administered to 261 adult women incarcerated in three Midwestern jails, September 2014 to March 2016, as part of a parent intervention study for cervical cancer prevention. Chi-square comparisons between a voter registered and a non-registered group yielded significant differences in five demographic and social context indicators, and a model for voter registration was estimated using multiple logistic regression. Total time incarcerated, having personal health insurance, being stably housed, and identifying as a Black woman contributed significantly to voter registration. We suggest that in a justice-involved group the community's facilitation of access to basic resources may trigger a reciprocal engagement in civic life, and we speculate that Black women may find belonging and motivation for engagement in resilient, long-standing sources outside official institutions. Our findings support the notion that meeting the basic needs of individuals post-incarceration can create healthier, more engaged communities.