---
title: "Decadal Population Growth Rate Explained | Model Diplomat"
description: "Decadal population growth rate measures the percentage change in a country's population over ten years, crucial for understanding demographic trends in policy."
url: "https://modeldiplomat.com/learn/glossary/decadal-population-growth-rate"
---

[New](https://modeldiplomat.com/)

#

Model Diplomat Research Team · Last reviewed June 22, 2026

TL;DR

- Decadal population growth rate is the percentage change in a country's population over a ten-year interval, measured between two successive census enumerations.
- How is the decadal population growth rate calculated?
- How does the decadal growth rate differ from the total fertility rate?
- Why did India's decadal growth rate fall while its population kept rising?
- What is the status of the next decadal figure for India?

[Civil Service & Diplomatic Exams](https://modeldiplomat.com/learn/civil-services/glossary)Updated June 22, 2026

Decadal population growth rate is the percentage change in a country's population over a ten-year interval, measured between two successive census enumerations.

Go beyond the definition

## Research Decadal Population Growth Rate like a delegate

Model Diplomat's AI drafts position papers, speeches, and country research with real sources — built for MUN and politics students.

## Research it like a delegate

Research on modeldiplomat.com

## Ask a follow-up about Decadal Population Growth Rate

Open a cited briefing in Model Diplomat search — timelines, positions, and sources you can use in committee or exam answers.

[Start research on Decadal Population Growth Rate](https://modeldiplomat.com/search?q=Explain%20Decadal%20Population%20Growth%20Rate%20%E2%80%94%20key%20dates%2C%20actors%2C%20positions%2C%20and%20sources)

Example

In 2011, the Registrar General of India reported a decadal population growth rate of 17.7 percent for 2001–2011, the steepest inter-decade decline since independence, with Bihar highest at 25.4 percent and Kerala lowest at 4.9 percent.

Keep learning

## Go deeper than the definition

[Explore all Civil Service & Diplomatic Exams lessons](https://modeldiplomat.com/learn/civil-services)[Test yourself with a quiz](https://modeldiplomat.com/learn/glossary/quiz/civil-services)

## Take Decadal Population Growth Rate beyond the glossary

Ask the AI research engine built for diplomacy — get briefings, position papers, and speeches with sources you can cite in committee.