Automatic Optimal Stratification for Survey Sampling R package AutoStrataK version 0.1.4 Provides tools for the automatic stratification of survey populations using clustering and optimization techniques. The package assists researchers and survey practitioners in constructing homogeneous strata to improve the efficiency and precision of survey estimates. Functions are provided for generating strata, evaluating stratification quality, summarizing stratified populations, and visualizing stratification results. These tools support the design and implementation of efficient survey sampling strategies. The package utilizes standard statistical methods from survey sampling, clustering, and optimization for automatic stratification. Methods are described in Cochran (1977, ISBN:9780471162405) and Lohr (2021, ISBN:9780367354556). Software Depends: R (>= 4.1.0) Imports: dplyr, ggplot2, rlang, stats Suggests: knitr, rmarkdown Khalid Islam <drkhalidulislam@gmail.com> Comprehensive R Archive Network (CRAN) Khalid Islam [aut, cre] GPL-3 2026-06-30 application/tgz https://CRAN.R-project.org/package=AutoStrataK doi:10.32614/CRAN.package.AutoStrataK