Territory mapping serves one purpose: to ensure each sales rep has a fair, manageable area with realistic growth potential.
Start with your baseline data. How many prospect accounts are in your total addressable market? What's their geographic distribution? Revenue concentration?
Next, choose your mapping dimensions. Geography is primary for many businesses, but you might also consider industry, company size, or customer segment.
Divide your market. If you have 500 accounts and 10 reps, that's roughly 50 per territory. But balance accounts by value—a territory with 30 high-revenue accounts is better than 50 low-value ones.
Consider workload. Some accounts require more servicing. Long implementation cycles or complex support needs should factor into territory design.
Finally, plan for growth. Your territories should have room for expansion. If every account is already in a territory, you have no capacity for new business.
Good territory mapping reduces rep churn, ensures fair quotas, and creates a foundation for scaling your sales team.