Of 36 counties in the Beaver State, Columbia County is 33rd in terms of its size (688 square miles). Columbia County is in Northwest Oregon. Oregon's Columbia County has nearly 1,000 acres of equestrian property for sale based on recent Land Network data. The combined market value of farms and ranches for sale here was about $2 million. Browse all Columbia County horse farms for sale on the Land Network to find the equestrian property that's right for your future needs, whether you're a horse breeder, equestrian business or simply horse lover looking for stable facilities, grooming pens or grazing pasture for your own horses. The most common type of land for sale by combined acreage in Columbia County is residential property.