Seaside, Key Largo, Monroe County, FL demographics:
population, income, and more

Total population
13
8.3% year-over-year change
Median household income
$86,533/yr
7.0% year-over-year change
Housing units
9
0.0% year-over-year change

Seaside population

How many people live in Seaside

Seaside is home to 13 residents, according to the most recent Census data. Gender-wise, 53.8% of Seaside locals are male, and 46.2% are female.

Total population
13
8.3% year-over-year change
Gender ratio
Male
53.8%
7
Female
46.2%
6
Value Percent YoY change
Male 7 53.8% 16.7%
Female 6 46.2% 0.0%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Seaside is 53, with the population distributed as follows: about 7.7% are children under 15, then 7.7% are in the 15 to 24 age group. Adults between 25 and 44 make up 23.1% of the population, while another 30.8% fall into the 45 to 64 bracket. Finally, around 30.8% are 65 or older.

Median age
53.2
Age breakdown
Under 15
7.7%
15 to 24
7.7%
25 to 44
23.1%
45 to 64
30.8%
Over 65
30.8%
Value Percent YoY change
Under 15 1 7.7% 0.0%
15 to 24 1 7.7% 0.0%
25 to 44 3 23.1% 50.0%
45 to 64 4 30.8% 0.0%
Over 65 4 30.8% 0.0%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Seaside, 76.9% of the population are US-born citizens, while 15.4% have gained naturalized citizenship. At the same time, 7.7% of residents are non-citizens. There’s also a share of 16.7% that includes residents with two or more races.

Citizenship
U.S.-born citizens
76.9%
Non-U.S.-born citizens
15.4%
Non-citizens
7.7%
Value Percent YoY change
U.S.-born citizens 10 76.9% 11.1%
Non-U.S.-born citizens 2 15.4% 0.0%
Non-citizens 1 7.7% 0.0%
Racial breakdown
White
75%
Black or African American
0%
American Indian and Alaska Native
0%
Asian
0%
Native Hawaiian and other Pacific Islander
0%
Two or more races
16.7%
Other
8.3%
Value Percent
White 9 75%
Two or more races 2 16.7%
Other 1 8.3%

Households in Seaside

A peek inside Seaside households

Seaside has 5 households, with an average of 2 members in each. Of these, 80% are families, while the remaining 40% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
5
0.0% year-over-year change
Average people per household
2
Non-family households
2
Family households
4
Value Percent YoY change
Non-family households 2 40% 0.0%
Family households 4 80% 33.3%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Seaside

The housing landscape of Seaside

Seaside's housing consists of 9 units, with 85.7% being detached single-family homes ideal for those wanting space. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 14.3% of the housing landscape.

Housing units
9
0.0% year-over-year change
Housing types
Value Percent
1 unit, detached 6 85.7%
Mobile home 1 14.3%
Homes built since 2020
0
% year-over-year change

The age of buildings in Seaside

In Seaside, the median construction year is 1983. Most development happened in the second half of the 20th century.

Construction year breakdown by decade
Value Percent YoY change
Built between 1960 and 1969 1 11.1% 0.0%
Built between 1970 and 1979 3 33.3% 0.0%
Built between 1980 and 1989 2 22.2% 0.0%
Built between 1990 and 1999 1 11.1% 0.0%
Built between 2000 and 2009 1 11.1% 0.0%
Built between 2010 and 2019 1 11.1% 0.0%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Seaside occupancy rates

Out of the 5 occupied housing units in Seaside, 80% are owner-occupied, while 20% are lived in by tenants. Meanwhile, 44.4% of all homes on the local market sit vacant.

Occupied housing units
5
0.0% year-over-year change
Occupancy breakdown
Renter occupied
1
Owner occupied
4
Value Percent YoY
change
Renter occupied 1 20% 0.0%
Owner occupied 4 80% 0.0%
Unoccupied housing units
44.4%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Seaside housing costs

Housing costs in Seaside come to a median of $1,620 per month, while tenants specifically pay a median gross rent of $1,899.

Median housing costs per month
$1,620/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Seaside
$1,899/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Seaside

Seaside education at a glance

About 33.3% of the population in Seaside went to high school, while 16.7% pursued college studies. Another 8.3% earned an associate degree and 25% hold a bachelor’s. Meanwhile, 16.7% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
High school diploma 4 33.3% 0.0%
College diploma 2 16.7% 0.0%
Associate degree 1 8.3% 0.0%
Bachelor's degree 3 25% 50.0%
Graduate degree 2 16.7% 0.0%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Seaside

How much people earn in Seaside

The average annual household income in Seaside was $144,420 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +7% change from the previous year. At the same time, the median income stood at $86,533, reflecting a +7% shift over the same period.

Average household income in Seaside
$144,420/year
7.0% year-over-year change
Median household income in Seaside
$86,533/year
7.0% year-over-year change

Seaside income by age

In Seaside, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $95,574. Those with someone between 45 and 64 in charge, often well established professionally, earn $108,381 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $71,888, while those led by someone over 65, many of whom may be retired, have about $69,566 in earnings. Overall, 84.6% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $71,888 4.7%
25 - 44 $95,574 12.8%
45 - 64 $108,381 19.5%
Over 65 $69,566 -1.3%
Above poverty level
11
Below poverty level
2
Value Percent YoY
change
Above poverty level 11 84.6% 0.0%
Below poverty level 2 15.4% 100.0%

Employment in Seaside

Workforce and job types in Seaside

83.3% of the working population are employed in professional or administrative positions, while 16.7% are in hands-on or service-based jobs. Also, 16.7% run their own businesses, 50% are employed by private companies, and 16.7% work in the public sector.

Workforce demographics

White collar
5
Blue collar
1
Value Percent YoY change
White collar 5 83.3% 25.0%
Blue collar 1 16.7% 0.0%
Employer type
Self employees
16.7%
Private companies
50%
Governmental workers
16.7%
Not for profit companies
16.7%
Value Percent YoY change
Self employees 1 16.7% 0.0%
Private companies 3 50% 0.0%
Governmental workers 1 16.7% 0.0%
Not for profit companies 1 16.7% 0.0%

Transportation in Seaside

How people get around in Seaside

Means of transportation
Value Percent YoY change
Car 5 100% 25.0%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Seaside by zipcode?

Zipcode Population Number of households Median income Average income
33037 14,770 6,083 $86,533 $149,385

Explore more communities

FAQs about Seaside demographics 

What is the total population of Seaside?

Seaside has a total population of 13 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +8.3% compared to a year ago.

What is the gender ratio in Seaside?

The gender ratio in Seaside is as follows:
  • 53.8% males (7 residents)
  • 46.2% females (6 residents)

What is the median age in Seaside?

The median age in Seaside is 53.2.

What is the age distribution of the population in Seaside?

The age distribution in Seaside is as follows:
  • Under 15: 7.7% (1 residents)
  • Ages 15-24: 7.7% (1 residents)
  • Ages 25-44: 23.1% (3 residents)
  • Ages 45-64: 30.8% (4 residents)
  • Over 65: 30.8% (4 residents)

What is the racial and ethnic makeup of Seaside?

The racial and ethnic makeup of Seaside is as follows:
  • White: 75% (9 residents)
  • Black or African American: 0% (0 residents)
  • American Indian and Alaska Native: 0% (0 residents)
  • Asian: 0% (0 residents)
  • Native Hawaiian and Other Pacific Islander: 0% ( residents)
  • Two or More Races: 16.7% (2 residents)
  • Other: 8.3% (1 residents)

What percentage of the population in Seaside are U.S.-born citizens?

U.S.-born citizens represent 76.9% of the population in Seaside.

How many housing units are there in Seaside?

There are 9 housing units in Seaside, reflecting a 0.0% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Seaside and what is the average household size?

Seaside has a total of 5 households, with an average of 2 people in each.

What is the median household income in Seaside?

Seaside has a median household income of $86,533, representing a +7.0% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Seaside?

Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 83.3% (5 residents)
  • Blue-collar workers: 16.7% (1 residents)

Places of employment:
  • Self-employed: 16.7% (1 residents)
  • Private companies: 50% (3 residents)
  • Governmental workers: 16.7% (1 residents)
  • Not-for-profit companies: 16.7% (1 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025