Food insecurity coupled with poor quality diets among women of reproductive age remain a challenge in Kenya today and undernutrition is a major risk factor for adverse health outcomes. Food nutrition and security is influenced by several multifaceted factors and therefore households ought to be equipped with knowledge to design practical solutions especially among those living in urban informal settlements. The study aimed at assessing the food and nutrition security status among women of reproductive age (15-49 years) within Kongowea’s informal settlement in Mombasa County, Kenya. A cross sectional study was carried out among 184 households across Kongowea ward in which semi-structured questionnaires were used to collect data on socio-demographic and dietary practices. The 24-hour dietary recalls, food frequency and diversity were used to assess the women’s dietary intakes. The estimates used to measure food security were Food Consumption Score (FCS), Household Dietary Diversity Score (HDDS) and Nutrient Adequacy Ratio (NAR). The data was analyzed using Nutri-survey software and SPSS version 20 for descriptive, inferential, correlation and regression statistics. The results indicated that 97.3% of the respondents had a food consumption score (FCS) of above average (above 35.5). The average HDDS for the respondents was 5.7 and there was a moderate positive correlation (r=0.18, p<0.05) between household dietary diversity score (HDDS) and nutritional adequacy ratio of zinc. Likewise, there was as insignificant correlation (r=0.13, p>0.05) between household dietary diversity score (HDDS) and nutritional adequacy ratio of iron. The findings established that there exists a state of food security among the major population of women of reproductive age in Kongowea ward thus, fulfilling their nutritional requirements.